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Finding the Fourth Proportional to 225,960.40, 338,942.54 and 57,480.87

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Solution

The fourth proportional to 225,960.40, 338,942.54 and 57,480.87 is: 86,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,960.40 : 338,942.54 = 57,480.87 : x
  2. Step 2: Convert to fraction form
    225,960.40/338,942.54 = 57,480.87/x
  3. Step 3: Cross multiply
    225,960.40x = 338,942.54 × 57,480.87
  4. Step 4: Simplify right side
    225,960.40x = 19,482,712,079.21
  5. Step 5: Solve for x
    x = 19,482,712,079.21/225,960.40
  6. Step 6: Final answer
    x = 86,221.80

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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.