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Finding the Fourth Proportional to 574,564.32, 861,905.34 and 219,876.66

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Solution

The fourth proportional to 574,564.32, 861,905.34 and 219,876.66 is: 329,837.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,564.32 : 861,905.34 = 219,876.66 : x
  2. Step 2: Convert to fraction form
    574,564.32/861,905.34 = 219,876.66/x
  3. Step 3: Cross multiply
    574,564.32x = 861,905.34 × 219,876.66
  4. Step 4: Simplify right side
    574,564.32x = 189,512,867,395.36
  5. Step 5: Solve for x
    x = 189,512,867,395.36/574,564.32
  6. Step 6: Final answer
    x = 329,837.51

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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.