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Finding the Fourth Proportional to 68,061.52, 93,925.20 and 39,761.20

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Solution

The fourth proportional to 68,061.52, 93,925.20 and 39,761.20 is: 54,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,061.52 : 93,925.20 = 39,761.20 : x
  2. Step 2: Convert to fraction form
    68,061.52/93,925.20 = 39,761.20/x
  3. Step 3: Cross multiply
    68,061.52x = 93,925.20 × 39,761.20
  4. Step 4: Simplify right side
    68,061.52x = 3,734,578,662.24
  5. Step 5: Solve for x
    x = 3,734,578,662.24/68,061.52
  6. Step 6: Final answer
    x = 54,870.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.