Home / 86,508,001.30-129,762,001.95-76,430,305.30

Finding the Fourth Proportional to 86,508,001.30, 129,762,001.95 and 76,430,305.30

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Solution

The fourth proportional to 86,508,001.30, 129,762,001.95 and 76,430,305.30 is: 114,645,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508,001.30 : 129,762,001.95 = 76,430,305.30 : x
  2. Step 2: Convert to fraction form
    86,508,001.30/129,762,001.95 = 76,430,305.30/x
  3. Step 3: Cross multiply
    86,508,001.30x = 129,762,001.95 × 76,430,305.30
  4. Step 4: Simplify right side
    86,508,001.30x = 9,917,749,425,377,696
  5. Step 5: Solve for x
    x = 9,917,749,425,377,696/86,508,001.30
  6. Step 6: Final answer
    x = 114,645,457.95

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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.