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Finding the Fourth Proportional to 93,485,726.16, 129,016,978.02 and 51,668,891.88

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Solution

The fourth proportional to 93,485,726.16, 129,016,978.02 and 51,668,891.88 is: 71,306,760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,485,726.16 : 129,016,978.02 = 51,668,891.88 : x
  2. Step 2: Convert to fraction form
    93,485,726.16/129,016,978.02 = 51,668,891.88/x
  3. Step 3: Cross multiply
    93,485,726.16x = 129,016,978.02 × 51,668,891.88
  4. Step 4: Simplify right side
    93,485,726.16x = 6,666,164,287,999,717
  5. Step 5: Solve for x
    x = 6,666,164,287,999,717/93,485,726.16
  6. Step 6: Final answer
    x = 71,306,760.53

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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.