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Finding the Fourth Proportional to 62,868.80, 86,758.45 and 34,188.47

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Solution

The fourth proportional to 62,868.80, 86,758.45 and 34,188.47 is: 47,179.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,868.80 : 86,758.45 = 34,188.47 : x
  2. Step 2: Convert to fraction form
    62,868.80/86,758.45 = 34,188.47/x
  3. Step 3: Cross multiply
    62,868.80x = 86,758.45 × 34,188.47
  4. Step 4: Simplify right side
    62,868.80x = 2,966,138,665.07
  5. Step 5: Solve for x
    x = 2,966,138,665.07/62,868.80
  6. Step 6: Final answer
    x = 47,179.82

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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.