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Finding the Fourth Proportional to 61,615.88, 92,432.46 and 20,053.16

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Solution

The fourth proportional to 61,615.88, 92,432.46 and 20,053.16 is: 30,082.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,615.88 : 92,432.46 = 20,053.16 : x
  2. Step 2: Convert to fraction form
    61,615.88/92,432.46 = 20,053.16/x
  3. Step 3: Cross multiply
    61,615.88x = 92,432.46 × 20,053.16
  4. Step 4: Simplify right side
    61,615.88x = 1,853,562,909.57
  5. Step 5: Solve for x
    x = 1,853,562,909.57/61,615.88
  6. Step 6: Final answer
    x = 30,082.55

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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.