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Finding the Fourth Proportional to 25,060.80, 37,591.20 and 20,964.80

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Solution

The fourth proportional to 25,060.80, 37,591.20 and 20,964.80 is: 31,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,060.80 : 37,591.20 = 20,964.80 : x
  2. Step 2: Convert to fraction form
    25,060.80/37,591.20 = 20,964.80/x
  3. Step 3: Cross multiply
    25,060.80x = 37,591.20 × 20,964.80
  4. Step 4: Simplify right side
    25,060.80x = 788,091,989.76
  5. Step 5: Solve for x
    x = 788,091,989.76/25,060.80
  6. Step 6: Final answer
    x = 31,447.20

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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.