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Finding the Fourth Proportional to 269,479.68, 404,256.40 and 91,939.02

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Solution

The fourth proportional to 269,479.68, 404,256.40 and 91,939.02 is: 137,921.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,479.68 : 404,256.40 = 91,939.02 : x
  2. Step 2: Convert to fraction form
    269,479.68/404,256.40 = 91,939.02/x
  3. Step 3: Cross multiply
    269,479.68x = 404,256.40 × 91,939.02
  4. Step 4: Simplify right side
    269,479.68x = 37,166,937,244.73
  5. Step 5: Solve for x
    x = 37,166,937,244.73/269,479.68
  6. Step 6: Final answer
    x = 137,921.11

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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.