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Finding the Fourth Proportional to 449,697.80, 674,635.28 and 134,147.72

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Solution

The fourth proportional to 449,697.80, 674,635.28 and 134,147.72 is: 201,248.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,697.80 : 674,635.28 = 134,147.72 : x
  2. Step 2: Convert to fraction form
    449,697.80/674,635.28 = 134,147.72/x
  3. Step 3: Cross multiply
    449,697.80x = 674,635.28 × 134,147.72
  4. Step 4: Simplify right side
    449,697.80x = 90,500,784,643.56
  5. Step 5: Solve for x
    x = 90,500,784,643.56/449,697.80
  6. Step 6: Final answer
    x = 201,248.00

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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.