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Finding the Fourth Proportional to 18,592.72, 25,658.12 and 10,209.28

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Solution

The fourth proportional to 18,592.72, 25,658.12 and 10,209.28 is: 14,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,592.72 : 25,658.12 = 10,209.28 : x
  2. Step 2: Convert to fraction form
    18,592.72/25,658.12 = 10,209.28/x
  3. Step 3: Cross multiply
    18,592.72x = 25,658.12 × 10,209.28
  4. Step 4: Simplify right side
    18,592.72x = 261,950,931.35
  5. Step 5: Solve for x
    x = 261,950,931.35/18,592.72
  6. Step 6: Final answer
    x = 14,088.90

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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.