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Finding the Fourth Proportional to 61,907.70, 92,861.55 and 52,066.20

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Solution

The fourth proportional to 61,907.70, 92,861.55 and 52,066.20 is: 78,099.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,907.70 : 92,861.55 = 52,066.20 : x
  2. Step 2: Convert to fraction form
    61,907.70/92,861.55 = 52,066.20/x
  3. Step 3: Cross multiply
    61,907.70x = 92,861.55 × 52,066.20
  4. Step 4: Simplify right side
    61,907.70x = 4,834,948,034.61
  5. Step 5: Solve for x
    x = 4,834,948,034.61/61,907.70
  6. Step 6: Final answer
    x = 78,099.30

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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.