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Finding the Fourth Proportional to 225,813.70, 338,720.55 and 92,649.70

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Solution

The fourth proportional to 225,813.70, 338,720.55 and 92,649.70 is: 138,974.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,813.70 : 338,720.55 = 92,649.70 : x
  2. Step 2: Convert to fraction form
    225,813.70/338,720.55 = 92,649.70/x
  3. Step 3: Cross multiply
    225,813.70x = 338,720.55 × 92,649.70
  4. Step 4: Simplify right side
    225,813.70x = 31,382,357,341.34
  5. Step 5: Solve for x
    x = 31,382,357,341.34/225,813.70
  6. Step 6: Final answer
    x = 138,974.55

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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.