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Finding the Fourth Proportional to 543,239.20, 814,935.60 and 169,223.20

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Solution

The fourth proportional to 543,239.20, 814,935.60 and 169,223.20 is: 253,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,239.20 : 814,935.60 = 169,223.20 : x
  2. Step 2: Convert to fraction form
    543,239.20/814,935.60 = 169,223.20/x
  3. Step 3: Cross multiply
    543,239.20x = 814,935.60 × 169,223.20
  4. Step 4: Simplify right side
    543,239.20x = 137,906,010,025.92
  5. Step 5: Solve for x
    x = 137,906,010,025.92/543,239.20
  6. Step 6: Final answer
    x = 253,858.72

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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.