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Finding the Fourth Proportional to 8,592.42, 12,871.55 and 5,661.84

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Solution

The fourth proportional to 8,592.42, 12,871.55 and 5,661.84 is: 8,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,592.42 : 12,871.55 = 5,661.84 : x
  2. Step 2: Convert to fraction form
    8,592.42/12,871.55 = 5,661.84/x
  3. Step 3: Cross multiply
    8,592.42x = 12,871.55 × 5,661.84
  4. Step 4: Simplify right side
    8,592.42x = 72,876,656.65
  5. Step 5: Solve for x
    x = 72,876,656.65/8,592.42
  6. Step 6: Final answer
    x = 8,481.51

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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.