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Finding the Fourth Proportional to 572,454.10, 858,780.12 and 193,377.61

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Solution

The fourth proportional to 572,454.10, 858,780.12 and 193,377.61 is: 290,099.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,454.10 : 858,780.12 = 193,377.61 : x
  2. Step 2: Convert to fraction form
    572,454.10/858,780.12 = 193,377.61/x
  3. Step 3: Cross multiply
    572,454.10x = 858,780.12 × 193,377.61
  4. Step 4: Simplify right side
    572,454.10x = 166,068,847,121.11
  5. Step 5: Solve for x
    x = 166,068,847,121.11/572,454.10
  6. Step 6: Final answer
    x = 290,099.85

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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.