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Finding the Fourth Proportional to 25,959.66, 38,922.39 and 9,311.28

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Solution

The fourth proportional to 25,959.66, 38,922.39 and 9,311.28 is: 13,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,959.66 : 38,922.39 = 9,311.28 : x
  2. Step 2: Convert to fraction form
    25,959.66/38,922.39 = 9,311.28/x
  3. Step 3: Cross multiply
    25,959.66x = 38,922.39 × 9,311.28
  4. Step 4: Simplify right side
    25,959.66x = 362,417,271.56
  5. Step 5: Solve for x
    x = 362,417,271.56/25,959.66
  6. Step 6: Final answer
    x = 13,960.79

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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.