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Finding the Fourth Proportional to 18,762.17, 25,881.39 and 12,040.25

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Solution

The fourth proportional to 18,762.17, 25,881.39 and 12,040.25 is: 16,608.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.17 : 25,881.39 = 12,040.25 : x
  2. Step 2: Convert to fraction form
    18,762.17/25,881.39 = 12,040.25/x
  3. Step 3: Cross multiply
    18,762.17x = 25,881.39 × 12,040.25
  4. Step 4: Simplify right side
    18,762.17x = 311,618,276.54
  5. Step 5: Solve for x
    x = 311,618,276.54/18,762.17
  6. Step 6: Final answer
    x = 16,608.87

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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.