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Finding the Fourth Proportional to 71,748.16, 99,015.68 and 59,791.48

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Solution

The fourth proportional to 71,748.16, 99,015.68 and 59,791.48 is: 82,514.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,748.16 : 99,015.68 = 59,791.48 : x
  2. Step 2: Convert to fraction form
    71,748.16/99,015.68 = 59,791.48/x
  3. Step 3: Cross multiply
    71,748.16x = 99,015.68 × 59,791.48
  4. Step 4: Simplify right side
    71,748.16x = 5,920,294,050.41
  5. Step 5: Solve for x
    x = 5,920,294,050.41/71,748.16
  6. Step 6: Final answer
    x = 82,514.93

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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.