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Finding the Fourth Proportional to 25,674.06, 38,458.80 and 20,947.06

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Solution

The fourth proportional to 25,674.06, 38,458.80 and 20,947.06 is: 31,377.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,674.06 : 38,458.80 = 20,947.06 : x
  2. Step 2: Convert to fraction form
    25,674.06/38,458.80 = 20,947.06/x
  3. Step 3: Cross multiply
    25,674.06x = 38,458.80 × 20,947.06
  4. Step 4: Simplify right side
    25,674.06x = 805,598,622.87
  5. Step 5: Solve for x
    x = 805,598,622.87/25,674.06
  6. Step 6: Final answer
    x = 31,377.92

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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.