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Finding the Fourth Proportional to 357,031.20, 535,546.80 and 146,560.80

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Solution

The fourth proportional to 357,031.20, 535,546.80 and 146,560.80 is: 219,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,031.20 : 535,546.80 = 146,560.80 : x
  2. Step 2: Convert to fraction form
    357,031.20/535,546.80 = 146,560.80/x
  3. Step 3: Cross multiply
    357,031.20x = 535,546.80 × 146,560.80
  4. Step 4: Simplify right side
    357,031.20x = 78,490,167,445.44
  5. Step 5: Solve for x
    x = 78,490,167,445.44/357,031.20
  6. Step 6: Final answer
    x = 219,841.20

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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.