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Finding the Fourth Proportional to 61,809.20, 92,713.80 and 60,715.70

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Solution

The fourth proportional to 61,809.20, 92,713.80 and 60,715.70 is: 91,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,809.20 : 92,713.80 = 60,715.70 : x
  2. Step 2: Convert to fraction form
    61,809.20/92,713.80 = 60,715.70/x
  3. Step 3: Cross multiply
    61,809.20x = 92,713.80 × 60,715.70
  4. Step 4: Simplify right side
    61,809.20x = 5,629,183,266.66
  5. Step 5: Solve for x
    x = 5,629,183,266.66/61,809.20
  6. Step 6: Final answer
    x = 91,073.55

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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.