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Finding the Fourth Proportional to 25,990.70, 38,981.99 and 7,268.76

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Solution

The fourth proportional to 25,990.70, 38,981.99 and 7,268.76 is: 10,902.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.70 : 38,981.99 = 7,268.76 : x
  2. Step 2: Convert to fraction form
    25,990.70/38,981.99 = 7,268.76/x
  3. Step 3: Cross multiply
    25,990.70x = 38,981.99 × 7,268.76
  4. Step 4: Simplify right side
    25,990.70x = 283,350,747.80
  5. Step 5: Solve for x
    x = 283,350,747.80/25,990.70
  6. Step 6: Final answer
    x = 10,902.01

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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.