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Finding the Fourth Proportional to 410,712.40, 616,176.60 and 130,229.20

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Solution

The fourth proportional to 410,712.40, 616,176.60 and 130,229.20 is: 195,378.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,712.40 : 616,176.60 = 130,229.20 : x
  2. Step 2: Convert to fraction form
    410,712.40/616,176.60 = 130,229.20/x
  3. Step 3: Cross multiply
    410,712.40x = 616,176.60 × 130,229.20
  4. Step 4: Simplify right side
    410,712.40x = 80,244,185,676.72
  5. Step 5: Solve for x
    x = 80,244,185,676.72/410,712.40
  6. Step 6: Final answer
    x = 195,378.04

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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.