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Finding the Fourth Proportional to 124,358.61, 171,609.88 and 67,768.77

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Solution

The fourth proportional to 124,358.61, 171,609.88 and 67,768.77 is: 93,518.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,358.61 : 171,609.88 = 67,768.77 : x
  2. Step 2: Convert to fraction form
    124,358.61/171,609.88 = 67,768.77/x
  3. Step 3: Cross multiply
    124,358.61x = 171,609.88 × 67,768.77
  4. Step 4: Simplify right side
    124,358.61x = 11,629,790,487.45
  5. Step 5: Solve for x
    x = 11,629,790,487.45/124,358.61
  6. Step 6: Final answer
    x = 93,518.18

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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.