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Finding the Fourth Proportional to 372,091.33, 557,809.31 and 147,609.42

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Solution

The fourth proportional to 372,091.33, 557,809.31 and 147,609.42 is: 221,284.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,091.33 : 557,809.31 = 147,609.42 : x
  2. Step 2: Convert to fraction form
    372,091.33/557,809.31 = 147,609.42/x
  3. Step 3: Cross multiply
    372,091.33x = 557,809.31 × 147,609.42
  4. Step 4: Simplify right side
    372,091.33x = 82,337,908,719.70
  5. Step 5: Solve for x
    x = 82,337,908,719.70/372,091.33
  6. Step 6: Final answer
    x = 221,284.14

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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.