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Finding the Fourth Proportional to 68,084.91, 93,891.20 and 45,424.82

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Solution

The fourth proportional to 68,084.91, 93,891.20 and 45,424.82 is: 62,642.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,084.91 : 93,891.20 = 45,424.82 : x
  2. Step 2: Convert to fraction form
    68,084.91/93,891.20 = 45,424.82/x
  3. Step 3: Cross multiply
    68,084.91x = 93,891.20 × 45,424.82
  4. Step 4: Simplify right side
    68,084.91x = 4,264,990,859.58
  5. Step 5: Solve for x
    x = 4,264,990,859.58/68,084.91
  6. Step 6: Final answer
    x = 62,642.24

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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.