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Finding the Fourth Proportional to 61,861.90, 92,839.49 and 45,264.75

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Solution

The fourth proportional to 61,861.90, 92,839.49 and 45,264.75 is: 67,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,861.90 : 92,839.49 = 45,264.75 : x
  2. Step 2: Convert to fraction form
    61,861.90/92,839.49 = 45,264.75/x
  3. Step 3: Cross multiply
    61,861.90x = 92,839.49 × 45,264.75
  4. Step 4: Simplify right side
    61,861.90x = 4,202,356,304.98
  5. Step 5: Solve for x
    x = 4,202,356,304.98/61,861.90
  6. Step 6: Final answer
    x = 67,931.25

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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.