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Finding the Fourth Proportional to 235,863.66, 353,480.19 and 85,963.04

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Solution

The fourth proportional to 235,863.66, 353,480.19 and 85,963.04 is: 128,829.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,863.66 : 353,480.19 = 85,963.04 : x
  2. Step 2: Convert to fraction form
    235,863.66/353,480.19 = 85,963.04/x
  3. Step 3: Cross multiply
    235,863.66x = 353,480.19 × 85,963.04
  4. Step 4: Simplify right side
    235,863.66x = 30,386,229,944.78
  5. Step 5: Solve for x
    x = 30,386,229,944.78/235,863.66
  6. Step 6: Final answer
    x = 128,829.64

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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.