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Finding the Fourth Proportional to 121,788.34, 168,060.27 and 67,339.11

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Solution

The fourth proportional to 121,788.34, 168,060.27 and 67,339.11 is: 92,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,788.34 : 168,060.27 = 67,339.11 : x
  2. Step 2: Convert to fraction form
    121,788.34/168,060.27 = 67,339.11/x
  3. Step 3: Cross multiply
    121,788.34x = 168,060.27 × 67,339.11
  4. Step 4: Simplify right side
    121,788.34x = 11,317,029,008.16
  5. Step 5: Solve for x
    x = 11,317,029,008.16/121,788.34
  6. Step 6: Final answer
    x = 92,923.75

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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.