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Finding the Fourth Proportional to 574,543.23, 861,873.17 and 219,855.57

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Solution

The fourth proportional to 574,543.23, 861,873.17 and 219,855.57 is: 329,805.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,543.23 : 861,873.17 = 219,855.57 : x
  2. Step 2: Convert to fraction form
    574,543.23/861,873.17 = 219,855.57/x
  3. Step 3: Cross multiply
    574,543.23x = 861,873.17 × 219,855.57
  4. Step 4: Simplify right side
    574,543.23x = 189,487,615,958.78
  5. Step 5: Solve for x
    x = 189,487,615,958.78/574,543.23
  6. Step 6: Final answer
    x = 329,805.67

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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.