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Finding the Fourth Proportional to 885,736,693.80, 1,328,605,040.70 and 516,893,020.20

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Solution

The fourth proportional to 885,736,693.80, 1,328,605,040.70 and 516,893,020.20 is: 775,339,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,736,693.80 : 1,328,605,040.70 = 516,893,020.20 : x
  2. Step 2: Convert to fraction form
    885,736,693.80/1,328,605,040.70 = 516,893,020.20/x
  3. Step 3: Cross multiply
    885,736,693.80x = 1,328,605,040.70 × 516,893,020.20
  4. Step 4: Simplify right side
    885,736,693.80x = 686,746,672,140,366,976
  5. Step 5: Solve for x
    x = 686,746,672,140,366,976/885,736,693.80
  6. Step 6: Final answer
    x = 775,339,530.30

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Double scale
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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.