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Finding the Fourth Proportional to 61,805.20, 92,707.80 and 60,711.70

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Solution

The fourth proportional to 61,805.20, 92,707.80 and 60,711.70 is: 91,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,805.20 : 92,707.80 = 60,711.70 : x
  2. Step 2: Convert to fraction form
    61,805.20/92,707.80 = 60,711.70/x
  3. Step 3: Cross multiply
    61,805.20x = 92,707.80 × 60,711.70
  4. Step 4: Simplify right side
    61,805.20x = 5,628,448,141.26
  5. Step 5: Solve for x
    x = 5,628,448,141.26/61,805.20
  6. Step 6: Final answer
    x = 91,067.55

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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.