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Finding the Fourth Proportional to 292,351.20, 438,526.80 and 82,024.80

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Solution

The fourth proportional to 292,351.20, 438,526.80 and 82,024.80 is: 123,037.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,351.20 : 438,526.80 = 82,024.80 : x
  2. Step 2: Convert to fraction form
    292,351.20/438,526.80 = 82,024.80/x
  3. Step 3: Cross multiply
    292,351.20x = 438,526.80 × 82,024.80
  4. Step 4: Simplify right side
    292,351.20x = 35,970,073,064.64
  5. Step 5: Solve for x
    x = 35,970,073,064.64/292,351.20
  6. Step 6: Final answer
    x = 123,037.20

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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.