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Finding the Fourth Proportional to 371,391.53, 557,124.21 and 134,752.66

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Solution

The fourth proportional to 371,391.53, 557,124.21 and 134,752.66 is: 202,142.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,391.53 : 557,124.21 = 134,752.66 : x
  2. Step 2: Convert to fraction form
    371,391.53/557,124.21 = 134,752.66/x
  3. Step 3: Cross multiply
    371,391.53x = 557,124.21 × 134,752.66
  4. Step 4: Simplify right side
    371,391.53x = 75,073,969,247.90
  5. Step 5: Solve for x
    x = 75,073,969,247.90/371,391.53
  6. Step 6: Final answer
    x = 202,142.38

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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.