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Finding the Fourth Proportional to 71,963.39, 99,290.26 and 69,125.75

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Solution

The fourth proportional to 71,963.39, 99,290.26 and 69,125.75 is: 95,375.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,963.39 : 99,290.26 = 69,125.75 : x
  2. Step 2: Convert to fraction form
    71,963.39/99,290.26 = 69,125.75/x
  3. Step 3: Cross multiply
    71,963.39x = 99,290.26 × 69,125.75
  4. Step 4: Simplify right side
    71,963.39x = 6,863,513,822.16
  5. Step 5: Solve for x
    x = 6,863,513,822.16/71,963.39
  6. Step 6: Final answer
    x = 95,375.08

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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.