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Finding the Fourth Proportional to 74,107.52, 111,062.86 and 42,532.71

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Solution

The fourth proportional to 74,107.52, 111,062.86 and 42,532.71 is: 63,742.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,107.52 : 111,062.86 = 42,532.71 : x
  2. Step 2: Convert to fraction form
    74,107.52/111,062.86 = 42,532.71/x
  3. Step 3: Cross multiply
    74,107.52x = 111,062.86 × 42,532.71
  4. Step 4: Simplify right side
    74,107.52x = 4,723,803,967.17
  5. Step 5: Solve for x
    x = 4,723,803,967.17/74,107.52
  6. Step 6: Final answer
    x = 63,742.57

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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.