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Finding the Fourth Proportional to 18,223.84, 25,150.06 and 13,739.68

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Solution

The fourth proportional to 18,223.84, 25,150.06 and 13,739.68 is: 18,961.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,223.84 : 25,150.06 = 13,739.68 : x
  2. Step 2: Convert to fraction form
    18,223.84/25,150.06 = 13,739.68/x
  3. Step 3: Cross multiply
    18,223.84x = 25,150.06 × 13,739.68
  4. Step 4: Simplify right side
    18,223.84x = 345,553,776.38
  5. Step 5: Solve for x
    x = 345,553,776.38/18,223.84
  6. Step 6: Final answer
    x = 18,961.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.