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Finding the Fourth Proportional to 25,754.59, 38,623.51 and 8,220.25

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Solution

The fourth proportional to 25,754.59, 38,623.51 and 8,220.25 is: 12,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,754.59 : 38,623.51 = 8,220.25 : x
  2. Step 2: Convert to fraction form
    25,754.59/38,623.51 = 8,220.25/x
  3. Step 3: Cross multiply
    25,754.59x = 38,623.51 × 8,220.25
  4. Step 4: Simplify right side
    25,754.59x = 317,494,908.08
  5. Step 5: Solve for x
    x = 317,494,908.08/25,754.59
  6. Step 6: Final answer
    x = 12,327.70

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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.