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Finding the Fourth Proportional to 25,966.40, 38,959.20 and 25,006.40

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Solution

The fourth proportional to 25,966.40, 38,959.20 and 25,006.40 is: 37,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,966.40 : 38,959.20 = 25,006.40 : x
  2. Step 2: Convert to fraction form
    25,966.40/38,959.20 = 25,006.40/x
  3. Step 3: Cross multiply
    25,966.40x = 38,959.20 × 25,006.40
  4. Step 4: Simplify right side
    25,966.40x = 974,229,338.88
  5. Step 5: Solve for x
    x = 974,229,338.88/25,966.40
  6. Step 6: Final answer
    x = 37,518.85

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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.