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Finding the Fourth Proportional to 96,387.65, 132,921.64 and 75,159.17

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Solution

The fourth proportional to 96,387.65, 132,921.64 and 75,159.17 is: 103,646.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,387.65 : 132,921.64 = 75,159.17 : x
  2. Step 2: Convert to fraction form
    96,387.65/132,921.64 = 75,159.17/x
  3. Step 3: Cross multiply
    96,387.65x = 132,921.64 × 75,159.17
  4. Step 4: Simplify right side
    96,387.65x = 9,990,280,137.44
  5. Step 5: Solve for x
    x = 9,990,280,137.44/96,387.65
  6. Step 6: Final answer
    x = 103,646.89

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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.