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Finding the Fourth Proportional to 15,658.62, 21,608.70 and 8,585.04

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Solution

The fourth proportional to 15,658.62, 21,608.70 and 8,585.04 is: 11,847.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658.62 : 21,608.70 = 8,585.04 : x
  2. Step 2: Convert to fraction form
    15,658.62/21,608.70 = 8,585.04/x
  3. Step 3: Cross multiply
    15,658.62x = 21,608.70 × 8,585.04
  4. Step 4: Simplify right side
    15,658.62x = 185,511,553.85
  5. Step 5: Solve for x
    x = 185,511,553.85/15,658.62
  6. Step 6: Final answer
    x = 11,847.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.