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Finding the Fourth Proportional to 74,139.97, 111,252.54 and 73,538.14

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Solution

The fourth proportional to 74,139.97, 111,252.54 and 73,538.14 is: 110,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,139.97 : 111,252.54 = 73,538.14 : x
  2. Step 2: Convert to fraction form
    74,139.97/111,252.54 = 73,538.14/x
  3. Step 3: Cross multiply
    74,139.97x = 111,252.54 × 73,538.14
  4. Step 4: Simplify right side
    74,139.97x = 8,181,304,861.88
  5. Step 5: Solve for x
    x = 8,181,304,861.88/74,139.97
  6. Step 6: Final answer
    x = 110,349.45

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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.