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Finding the Fourth Proportional to 299,720.55, 449,570.45 and 75,082.92

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Solution

The fourth proportional to 299,720.55, 449,570.45 and 75,082.92 is: 112,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,720.55 : 449,570.45 = 75,082.92 : x
  2. Step 2: Convert to fraction form
    299,720.55/449,570.45 = 75,082.92/x
  3. Step 3: Cross multiply
    299,720.55x = 449,570.45 × 75,082.92
  4. Step 4: Simplify right side
    299,720.55x = 33,755,060,633.53
  5. Step 5: Solve for x
    x = 33,755,060,633.53/299,720.55
  6. Step 6: Final answer
    x = 112,621.77

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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.