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Finding the Fourth Proportional to 437,279.20, 655,918.80 and 237,695.20

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Solution

The fourth proportional to 437,279.20, 655,918.80 and 237,695.20 is: 356,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,279.20 : 655,918.80 = 237,695.20 : x
  2. Step 2: Convert to fraction form
    437,279.20/655,918.80 = 237,695.20/x
  3. Step 3: Cross multiply
    437,279.20x = 655,918.80 × 237,695.20
  4. Step 4: Simplify right side
    437,279.20x = 155,908,750,349.76
  5. Step 5: Solve for x
    x = 155,908,750,349.76/437,279.20
  6. Step 6: Final answer
    x = 356,542.80

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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.