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Finding the Fourth Proportional to 123,703.80, 185,409.90 and 92,502.60

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Solution

The fourth proportional to 123,703.80, 185,409.90 and 92,502.60 is: 138,644.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,703.80 : 185,409.90 = 92,502.60 : x
  2. Step 2: Convert to fraction form
    123,703.80/185,409.90 = 92,502.60/x
  3. Step 3: Cross multiply
    123,703.80x = 185,409.90 × 92,502.60
  4. Step 4: Simplify right side
    123,703.80x = 17,150,897,815.74
  5. Step 5: Solve for x
    x = 17,150,897,815.74/123,703.80
  6. Step 6: Final answer
    x = 138,644.87

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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.