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Finding the Fourth Proportional to 664,281,407.70, 996,422,111.55 and 664,281,407.70

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Solution

The fourth proportional to 664,281,407.70, 996,422,111.55 and 664,281,407.70 is: 996,422,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,281,407.70 : 996,422,111.55 = 664,281,407.70 : x
  2. Step 2: Convert to fraction form
    664,281,407.70/996,422,111.55 = 664,281,407.70/x
  3. Step 3: Cross multiply
    664,281,407.70x = 996,422,111.55 × 664,281,407.70
  4. Step 4: Simplify right side
    664,281,407.70x = 661,904,682,923,840,384
  5. Step 5: Solve for x
    x = 661,904,682,923,840,384/664,281,407.70
  6. Step 6: Final answer
    x = 996,422,111.55

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Double scale
Find fourth proportional to 664,281,408.70, 996,422,113.05 and 664,281,408.70
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.