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Finding the Fourth Proportional to 61,802.70, 92,704.05 and 50,721.90

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Solution

The fourth proportional to 61,802.70, 92,704.05 and 50,721.90 is: 76,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,802.70 : 92,704.05 = 50,721.90 : x
  2. Step 2: Convert to fraction form
    61,802.70/92,704.05 = 50,721.90/x
  3. Step 3: Cross multiply
    61,802.70x = 92,704.05 × 50,721.90
  4. Step 4: Simplify right side
    61,802.70x = 4,702,125,553.70
  5. Step 5: Solve for x
    x = 4,702,125,553.70/61,802.70
  6. Step 6: Final answer
    x = 76,082.85

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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.