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Finding the Fourth Proportional to 124,442.52, 171,734.22 and 67,857

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Solution

The fourth proportional to 124,442.52, 171,734.22 and 67,857 is: 93,644.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,442.52 : 171,734.22 = 67,857 : x
  2. Step 2: Convert to fraction form
    124,442.52/171,734.22 = 67,857/x
  3. Step 3: Cross multiply
    124,442.52x = 171,734.22 × 67,857
  4. Step 4: Simplify right side
    124,442.52x = 11,653,368,966.54
  5. Step 5: Solve for x
    x = 11,653,368,966.54/124,442.52
  6. Step 6: Final answer
    x = 93,644.59

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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.