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Finding the Fourth Proportional to 482,862.92, 666,382.66 and 278,922.42

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Solution

The fourth proportional to 482,862.92, 666,382.66 and 278,922.42 is: 384,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,862.92 : 666,382.66 = 278,922.42 : x
  2. Step 2: Convert to fraction form
    482,862.92/666,382.66 = 278,922.42/x
  3. Step 3: Cross multiply
    482,862.92x = 666,382.66 × 278,922.42
  4. Step 4: Simplify right side
    482,862.92x = 185,869,063,475.93
  5. Step 5: Solve for x
    x = 185,869,063,475.93/482,862.92
  6. Step 6: Final answer
    x = 384,931.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.