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Finding the Fourth Proportional to 18,560.64, 25,614.08 and 11,292.64

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Solution

The fourth proportional to 18,560.64, 25,614.08 and 11,292.64 is: 15,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,560.64 : 25,614.08 = 11,292.64 : x
  2. Step 2: Convert to fraction form
    18,560.64/25,614.08 = 11,292.64/x
  3. Step 3: Cross multiply
    18,560.64x = 25,614.08 × 11,292.64
  4. Step 4: Simplify right side
    18,560.64x = 289,250,584.37
  5. Step 5: Solve for x
    x = 289,250,584.37/18,560.64
  6. Step 6: Final answer
    x = 15,584.08

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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.