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Finding the Fourth Proportional to 1,010,398,965.20, 1,515,598,447.80 and 1,010,398,965.20

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Solution

The fourth proportional to 1,010,398,965.20, 1,515,598,447.80 and 1,010,398,965.20 is: 1,515,598,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,398,965.20 : 1,515,598,447.80 = 1,010,398,965.20 : x
  2. Step 2: Convert to fraction form
    1,010,398,965.20/1,515,598,447.80 = 1,010,398,965.20/x
  3. Step 3: Cross multiply
    1,010,398,965.20x = 1,515,598,447.80 × 1,010,398,965.20
  4. Step 4: Simplify right side
    1,010,398,965.20x = 1,531,359,103,315,846,144
  5. Step 5: Solve for x
    x = 1,531,359,103,315,846,144/1,010,398,965.20
  6. Step 6: Final answer
    x = 1,515,598,447.80

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Double scale
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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.