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Finding the Fourth Proportional to 219,612.20, 329,472.30 and 61,838.60

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Solution

The fourth proportional to 219,612.20, 329,472.30 and 61,838.60 is: 92,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,612.20 : 329,472.30 = 61,838.60 : x
  2. Step 2: Convert to fraction form
    219,612.20/329,472.30 = 61,838.60/x
  3. Step 3: Cross multiply
    219,612.20x = 329,472.30 × 61,838.60
  4. Step 4: Simplify right side
    219,612.20x = 20,374,105,770.78
  5. Step 5: Solve for x
    x = 20,374,105,770.78/219,612.20
  6. Step 6: Final answer
    x = 92,773.11

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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.