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Finding the Fourth Proportional to 61,931.30, 92,787.60 and 54,932.90

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Solution

The fourth proportional to 61,931.30, 92,787.60 and 54,932.90 is: 82,302.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,931.30 : 92,787.60 = 54,932.90 : x
  2. Step 2: Convert to fraction form
    61,931.30/92,787.60 = 54,932.90/x
  3. Step 3: Cross multiply
    61,931.30x = 92,787.60 × 54,932.90
  4. Step 4: Simplify right side
    61,931.30x = 5,097,091,952.04
  5. Step 5: Solve for x
    x = 5,097,091,952.04/61,931.30
  6. Step 6: Final answer
    x = 82,302.36

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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.