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Finding the Fourth Proportional to 181,294.20, 271,941.30 and 139,255.20

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Solution

The fourth proportional to 181,294.20, 271,941.30 and 139,255.20 is: 208,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,294.20 : 271,941.30 = 139,255.20 : x
  2. Step 2: Convert to fraction form
    181,294.20/271,941.30 = 139,255.20/x
  3. Step 3: Cross multiply
    181,294.20x = 271,941.30 × 139,255.20
  4. Step 4: Simplify right side
    181,294.20x = 37,869,240,119.76
  5. Step 5: Solve for x
    x = 37,869,240,119.76/181,294.20
  6. Step 6: Final answer
    x = 208,882.80

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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.