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Finding the Fourth Proportional to 269,561.20, 403,904.40 and 169,542.40

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Solution

The fourth proportional to 269,561.20, 403,904.40 and 169,542.40 is: 254,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,561.20 : 403,904.40 = 169,542.40 : x
  2. Step 2: Convert to fraction form
    269,561.20/403,904.40 = 169,542.40/x
  3. Step 3: Cross multiply
    269,561.20x = 403,904.40 × 169,542.40
  4. Step 4: Simplify right side
    269,561.20x = 68,478,921,346.56
  5. Step 5: Solve for x
    x = 68,478,921,346.56/269,561.20
  6. Step 6: Final answer
    x = 254,038.49

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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.