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Finding the Fourth Proportional to 381,697.50, 572,546.25 and 119,041.50

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Solution

The fourth proportional to 381,697.50, 572,546.25 and 119,041.50 is: 178,562.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,697.50 : 572,546.25 = 119,041.50 : x
  2. Step 2: Convert to fraction form
    381,697.50/572,546.25 = 119,041.50/x
  3. Step 3: Cross multiply
    381,697.50x = 572,546.25 × 119,041.50
  4. Step 4: Simplify right side
    381,697.50x = 68,156,764,419.38
  5. Step 5: Solve for x
    x = 68,156,764,419.38/381,697.50
  6. Step 6: Final answer
    x = 178,562.25

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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.