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Finding the Fourth Proportional to 68,937.40, 103,424.10 and 22,191.40

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Solution

The fourth proportional to 68,937.40, 103,424.10 and 22,191.40 is: 33,292.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,937.40 : 103,424.10 = 22,191.40 : x
  2. Step 2: Convert to fraction form
    68,937.40/103,424.10 = 22,191.40/x
  3. Step 3: Cross multiply
    68,937.40x = 103,424.10 × 22,191.40
  4. Step 4: Simplify right side
    68,937.40x = 2,295,125,572.74
  5. Step 5: Solve for x
    x = 2,295,125,572.74/68,937.40
  6. Step 6: Final answer
    x = 33,292.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.