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Finding the Fourth Proportional to 124,012.32, 171,144 and 67,422.48

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Solution

The fourth proportional to 124,012.32, 171,144 and 67,422.48 is: 93,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,012.32 : 171,144 = 67,422.48 : x
  2. Step 2: Convert to fraction form
    124,012.32/171,144 = 67,422.48/x
  3. Step 3: Cross multiply
    124,012.32x = 171,144 × 67,422.48
  4. Step 4: Simplify right side
    124,012.32x = 11,538,952,917.12
  5. Step 5: Solve for x
    x = 11,538,952,917.12/124,012.32
  6. Step 6: Final answer
    x = 93,046.83

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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.