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Finding the Fourth Proportional to 18,414.91, 25,411.75 and 10,758.89

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Solution

The fourth proportional to 18,414.91, 25,411.75 and 10,758.89 is: 14,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,414.91 : 25,411.75 = 10,758.89 : x
  2. Step 2: Convert to fraction form
    18,414.91/25,411.75 = 10,758.89/x
  3. Step 3: Cross multiply
    18,414.91x = 25,411.75 × 10,758.89
  4. Step 4: Simplify right side
    18,414.91x = 273,402,320.11
  5. Step 5: Solve for x
    x = 273,402,320.11/18,414.91
  6. Step 6: Final answer
    x = 14,846.79

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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.