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Finding the Fourth Proportional to 25,161.84, 37,739.88 and 8,521.92

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Solution

The fourth proportional to 25,161.84, 37,739.88 and 8,521.92 is: 12,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,161.84 : 37,739.88 = 8,521.92 : x
  2. Step 2: Convert to fraction form
    25,161.84/37,739.88 = 8,521.92/x
  3. Step 3: Cross multiply
    25,161.84x = 37,739.88 × 8,521.92
  4. Step 4: Simplify right side
    25,161.84x = 321,616,238.17
  5. Step 5: Solve for x
    x = 321,616,238.17/25,161.84
  6. Step 6: Final answer
    x = 12,781.90

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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.