Home / 71,864,970,542.38-99,167,003,939.55-39,749,641,484.86

Finding the Fourth Proportional to 71,864,970,542.38, 99,167,003,939.55 and 39,749,641,484.86

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Solution

The fourth proportional to 71,864,970,542.38, 99,167,003,939.55 and 39,749,641,484.86 is: 54,850,824,038.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,864,970,542.38 : 99,167,003,939.55 = 39,749,641,484.86 : x
  2. Step 2: Convert to fraction form
    71,864,970,542.38/99,167,003,939.55 = 39,749,641,484.86/x
  3. Step 3: Cross multiply
    71,864,970,542.38x = 99,167,003,939.55 × 39,749,641,484.86
  4. Step 4: Simplify right side
    71,864,970,542.38x = 3,941,852,853,724,812,148,736
  5. Step 5: Solve for x
    x = 3,941,852,853,724,812,148,736/71,864,970,542.38
  6. Step 6: Final answer
    x = 54,850,824,038.12

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.