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Finding the Fourth Proportional to 25,689.84, 38,540.03 and 9,894.84

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Solution

The fourth proportional to 25,689.84, 38,540.03 and 9,894.84 is: 14,844.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,689.84 : 38,540.03 = 9,894.84 : x
  2. Step 2: Convert to fraction form
    25,689.84/38,540.03 = 9,894.84/x
  3. Step 3: Cross multiply
    25,689.84x = 38,540.03 × 9,894.84
  4. Step 4: Simplify right side
    25,689.84x = 381,347,380.97
  5. Step 5: Solve for x
    x = 381,347,380.97/25,689.84
  6. Step 6: Final answer
    x = 14,844.29

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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.