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Finding the Fourth Proportional to 61,687.81, 92,531.40 and 14,940.68

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Solution

The fourth proportional to 61,687.81, 92,531.40 and 14,940.68 is: 22,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,687.81 : 92,531.40 = 14,940.68 : x
  2. Step 2: Convert to fraction form
    61,687.81/92,531.40 = 14,940.68/x
  3. Step 3: Cross multiply
    61,687.81x = 92,531.40 × 14,940.68
  4. Step 4: Simplify right side
    61,687.81x = 1,382,482,268.68
  5. Step 5: Solve for x
    x = 1,382,482,268.68/61,687.81
  6. Step 6: Final answer
    x = 22,410.95

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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.