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Finding the Fourth Proportional to 18,808.59, 25,937.94 and 11,253.72

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Solution

The fourth proportional to 18,808.59, 25,937.94 and 11,253.72 is: 15,519.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.59 : 25,937.94 = 11,253.72 : x
  2. Step 2: Convert to fraction form
    18,808.59/25,937.94 = 11,253.72/x
  3. Step 3: Cross multiply
    18,808.59x = 25,937.94 × 11,253.72
  4. Step 4: Simplify right side
    18,808.59x = 291,898,314.14
  5. Step 5: Solve for x
    x = 291,898,314.14/18,808.59
  6. Step 6: Final answer
    x = 15,519.42

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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.