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Finding the Fourth Proportional to 543,039.20, 814,635.60 and 169,023.20

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Solution

The fourth proportional to 543,039.20, 814,635.60 and 169,023.20 is: 253,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,039.20 : 814,635.60 = 169,023.20 : x
  2. Step 2: Convert to fraction form
    543,039.20/814,635.60 = 169,023.20/x
  3. Step 3: Cross multiply
    543,039.20x = 814,635.60 × 169,023.20
  4. Step 4: Simplify right side
    543,039.20x = 137,692,315,945.92
  5. Step 5: Solve for x
    x = 137,692,315,945.92/543,039.20
  6. Step 6: Final answer
    x = 253,558.70

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1.5x scale

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.