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Finding the Fourth Proportional to 18,188.69, 25,100.75 and 10,640.79

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Solution

The fourth proportional to 18,188.69, 25,100.75 and 10,640.79 is: 14,684.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,188.69 : 25,100.75 = 10,640.79 : x
  2. Step 2: Convert to fraction form
    18,188.69/25,100.75 = 10,640.79/x
  3. Step 3: Cross multiply
    18,188.69x = 25,100.75 × 10,640.79
  4. Step 4: Simplify right side
    18,188.69x = 267,091,836.19
  5. Step 5: Solve for x
    x = 267,091,836.19/18,188.69
  6. Step 6: Final answer
    x = 14,684.51

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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.