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Finding the Fourth Proportional to 122,359.52, 183,243.90 and 69,609.08

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Solution

The fourth proportional to 122,359.52, 183,243.90 and 69,609.08 is: 104,245.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,359.52 : 183,243.90 = 69,609.08 : x
  2. Step 2: Convert to fraction form
    122,359.52/183,243.90 = 69,609.08/x
  3. Step 3: Cross multiply
    122,359.52x = 183,243.90 × 69,609.08
  4. Step 4: Simplify right side
    122,359.52x = 12,755,439,294.61
  5. Step 5: Solve for x
    x = 12,755,439,294.61/122,359.52
  6. Step 6: Final answer
    x = 104,245.58

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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.