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Finding the Fourth Proportional to 574,031.70, 861,375.60 and 219,300.30

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Solution

The fourth proportional to 574,031.70, 861,375.60 and 219,300.30 is: 329,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,031.70 : 861,375.60 = 219,300.30 : x
  2. Step 2: Convert to fraction form
    574,031.70/861,375.60 = 219,300.30/x
  3. Step 3: Cross multiply
    574,031.70x = 861,375.60 × 219,300.30
  4. Step 4: Simplify right side
    574,031.70x = 188,899,927,492.68
  5. Step 5: Solve for x
    x = 188,899,927,492.68/574,031.70
  6. Step 6: Final answer
    x = 329,075.78

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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.