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Finding the Fourth Proportional to 61,686.31, 92,529.15 and 14,939.18

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Solution

The fourth proportional to 61,686.31, 92,529.15 and 14,939.18 is: 22,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,686.31 : 92,529.15 = 14,939.18 : x
  2. Step 2: Convert to fraction form
    61,686.31/92,529.15 = 14,939.18/x
  3. Step 3: Cross multiply
    61,686.31x = 92,529.15 × 14,939.18
  4. Step 4: Simplify right side
    61,686.31x = 1,382,309,858.42
  5. Step 5: Solve for x
    x = 1,382,309,858.42/61,686.31
  6. Step 6: Final answer
    x = 22,408.70

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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.