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Finding the Fourth Proportional to 66,787.76, 92,165.90 and 36,572.53

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Solution

The fourth proportional to 66,787.76, 92,165.90 and 36,572.53 is: 50,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,787.76 : 92,165.90 = 36,572.53 : x
  2. Step 2: Convert to fraction form
    66,787.76/92,165.90 = 36,572.53/x
  3. Step 3: Cross multiply
    66,787.76x = 92,165.90 × 36,572.53
  4. Step 4: Simplify right side
    66,787.76x = 3,370,739,499.03
  5. Step 5: Solve for x
    x = 3,370,739,499.03/66,787.76
  6. Step 6: Final answer
    x = 50,469.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.