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Finding the Fourth Proportional to 444,886.40, 667,264.80 and 129,310.40

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Solution

The fourth proportional to 444,886.40, 667,264.80 and 129,310.40 is: 193,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,886.40 : 667,264.80 = 129,310.40 : x
  2. Step 2: Convert to fraction form
    444,886.40/667,264.80 = 129,310.40/x
  3. Step 3: Cross multiply
    444,886.40x = 667,264.80 × 129,310.40
  4. Step 4: Simplify right side
    444,886.40x = 86,284,278,193.92
  5. Step 5: Solve for x
    x = 86,284,278,193.92/444,886.40
  6. Step 6: Final answer
    x = 193,946.77

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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.