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Finding the Fourth Proportional to 291,813.20, 437,719.80 and 125,601.20

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Solution

The fourth proportional to 291,813.20, 437,719.80 and 125,601.20 is: 188,401.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,813.20 : 437,719.80 = 125,601.20 : x
  2. Step 2: Convert to fraction form
    291,813.20/437,719.80 = 125,601.20/x
  3. Step 3: Cross multiply
    291,813.20x = 437,719.80 × 125,601.20
  4. Step 4: Simplify right side
    291,813.20x = 54,978,132,143.76
  5. Step 5: Solve for x
    x = 54,978,132,143.76/291,813.20
  6. Step 6: Final answer
    x = 188,401.80

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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.