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Finding the Fourth Proportional to 124,374.80, 171,639.72 and 67,786.17

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Solution

The fourth proportional to 124,374.80, 171,639.72 and 67,786.17 is: 93,546.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,374.80 : 171,639.72 = 67,786.17 : x
  2. Step 2: Convert to fraction form
    124,374.80/171,639.72 = 67,786.17/x
  3. Step 3: Cross multiply
    124,374.80x = 171,639.72 × 67,786.17
  4. Step 4: Simplify right side
    124,374.80x = 11,634,799,238.67
  5. Step 5: Solve for x
    x = 11,634,799,238.67/124,374.80
  6. Step 6: Final answer
    x = 93,546.28

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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.