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Finding the Fourth Proportional to 449,521.60, 674,079.20 and 239,114.56

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Solution

The fourth proportional to 449,521.60, 674,079.20 and 239,114.56 is: 358,563.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,521.60 : 674,079.20 = 239,114.56 : x
  2. Step 2: Convert to fraction form
    449,521.60/674,079.20 = 239,114.56/x
  3. Step 3: Cross multiply
    449,521.60x = 674,079.20 × 239,114.56
  4. Step 4: Simplify right side
    449,521.60x = 161,182,151,313.15
  5. Step 5: Solve for x
    x = 161,182,151,313.15/449,521.60
  6. Step 6: Final answer
    x = 358,563.75

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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.