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Finding the Fourth Proportional to 61,638.80, 92,462.30 and 21,652.92

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Solution

The fourth proportional to 61,638.80, 92,462.30 and 21,652.92 is: 32,480.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,638.80 : 92,462.30 = 21,652.92 : x
  2. Step 2: Convert to fraction form
    61,638.80/92,462.30 = 21,652.92/x
  3. Step 3: Cross multiply
    61,638.80x = 92,462.30 × 21,652.92
  4. Step 4: Simplify right side
    61,638.80x = 2,002,078,676.65
  5. Step 5: Solve for x
    x = 2,002,078,676.65/61,638.80
  6. Step 6: Final answer
    x = 32,480.82

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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.