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Finding the Fourth Proportional to 295,608.40, 443,478.12 and 85,229.92

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Solution

The fourth proportional to 295,608.40, 443,478.12 and 85,229.92 is: 127,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,608.40 : 443,478.12 = 85,229.92 : x
  2. Step 2: Convert to fraction form
    295,608.40/443,478.12 = 85,229.92/x
  3. Step 3: Cross multiply
    295,608.40x = 443,478.12 × 85,229.92
  4. Step 4: Simplify right side
    295,608.40x = 37,797,604,689.35
  5. Step 5: Solve for x
    x = 37,797,604,689.35/295,608.40
  6. Step 6: Final answer
    x = 127,863.77

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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.