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Finding the Fourth Proportional to 664,299,916.20, 996,449,874.30 and 664,299,916.20

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Solution

The fourth proportional to 664,299,916.20, 996,449,874.30 and 664,299,916.20 is: 996,449,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,299,916.20 : 996,449,874.30 = 664,299,916.20 : x
  2. Step 2: Convert to fraction form
    664,299,916.20/996,449,874.30 = 664,299,916.20/x
  3. Step 3: Cross multiply
    664,299,916.20x = 996,449,874.30 × 664,299,916.20
  4. Step 4: Simplify right side
    664,299,916.20x = 661,941,567,994,990,592
  5. Step 5: Solve for x
    x = 661,941,567,994,990,592/664,299,916.20
  6. Step 6: Final answer
    x = 996,449,874.30

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Half scale
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Double scale
Find fourth proportional to 664,299,917.20, 996,449,875.80 and 664,299,917.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.