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Finding the Fourth Proportional to 25,963.76, 38,950.48 and 12,112.76

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Solution

The fourth proportional to 25,963.76, 38,950.48 and 12,112.76 is: 18,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,963.76 : 38,950.48 = 12,112.76 : x
  2. Step 2: Convert to fraction form
    25,963.76/38,950.48 = 12,112.76/x
  3. Step 3: Cross multiply
    25,963.76x = 38,950.48 × 12,112.76
  4. Step 4: Simplify right side
    25,963.76x = 471,797,816.12
  5. Step 5: Solve for x
    x = 471,797,816.12/25,963.76
  6. Step 6: Final answer
    x = 18,171.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.