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Finding the Fourth Proportional to 71,891.72, 107,673.56 and 63,482.75

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Solution

The fourth proportional to 71,891.72, 107,673.56 and 63,482.75 is: 95,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,891.72 : 107,673.56 = 63,482.75 : x
  2. Step 2: Convert to fraction form
    71,891.72/107,673.56 = 63,482.75/x
  3. Step 3: Cross multiply
    71,891.72x = 107,673.56 × 63,482.75
  4. Step 4: Simplify right side
    71,891.72x = 6,835,413,373.68
  5. Step 5: Solve for x
    x = 6,835,413,373.68/71,891.72
  6. Step 6: Final answer
    x = 95,079.29

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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.