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Finding the Fourth Proportional to 25,071.92, 37,608.92 and 20,681.20

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Solution

The fourth proportional to 25,071.92, 37,608.92 and 20,681.20 is: 31,022.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,071.92 : 37,608.92 = 20,681.20 : x
  2. Step 2: Convert to fraction form
    25,071.92/37,608.92 = 20,681.20/x
  3. Step 3: Cross multiply
    25,071.92x = 37,608.92 × 20,681.20
  4. Step 4: Simplify right side
    25,071.92x = 777,797,596.30
  5. Step 5: Solve for x
    x = 777,797,596.30/25,071.92
  6. Step 6: Final answer
    x = 31,022.66

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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.