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Finding the Fourth Proportional to 447,601.31, 671,503.45 and 148,081.42

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Solution

The fourth proportional to 447,601.31, 671,503.45 and 148,081.42 is: 222,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,601.31 : 671,503.45 = 148,081.42 : x
  2. Step 2: Convert to fraction form
    447,601.31/671,503.45 = 148,081.42/x
  3. Step 3: Cross multiply
    447,601.31x = 671,503.45 × 148,081.42
  4. Step 4: Simplify right side
    447,601.31x = 99,437,181,380.52
  5. Step 5: Solve for x
    x = 99,437,181,380.52/447,601.31
  6. Step 6: Final answer
    x = 222,155.70

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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.