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Finding the Fourth Proportional to 15,182.64, 20,952.08 and 8,468.70

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Solution

The fourth proportional to 15,182.64, 20,952.08 and 8,468.70 is: 11,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,182.64 : 20,952.08 = 8,468.70 : x
  2. Step 2: Convert to fraction form
    15,182.64/20,952.08 = 8,468.70/x
  3. Step 3: Cross multiply
    15,182.64x = 20,952.08 × 8,468.70
  4. Step 4: Simplify right side
    15,182.64x = 177,436,952.06
  5. Step 5: Solve for x
    x = 177,436,952.06/15,182.64
  6. Step 6: Final answer
    x = 11,686.83

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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.