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Finding the Fourth Proportional to 18,592.64, 25,636.16 and 13,868.72

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Solution

The fourth proportional to 18,592.64, 25,636.16 and 13,868.72 is: 19,122.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,592.64 : 25,636.16 = 13,868.72 : x
  2. Step 2: Convert to fraction form
    18,592.64/25,636.16 = 13,868.72/x
  3. Step 3: Cross multiply
    18,592.64x = 25,636.16 × 13,868.72
  4. Step 4: Simplify right side
    18,592.64x = 355,540,724.92
  5. Step 5: Solve for x
    x = 355,540,724.92/18,592.64
  6. Step 6: Final answer
    x = 19,122.66

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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.