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Finding the Fourth Proportional to 172,568.70, 258,951.87 and 93,689.55

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Solution

The fourth proportional to 172,568.70, 258,951.87 and 93,689.55 is: 140,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,568.70 : 258,951.87 = 93,689.55 : x
  2. Step 2: Convert to fraction form
    172,568.70/258,951.87 = 93,689.55/x
  3. Step 3: Cross multiply
    172,568.70x = 258,951.87 × 93,689.55
  4. Step 4: Simplify right side
    172,568.70x = 24,261,084,171.96
  5. Step 5: Solve for x
    x = 24,261,084,171.96/172,568.70
  6. Step 6: Final answer
    x = 140,587.98

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1.5x scale

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.