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Finding the Fourth Proportional to 186,331.92, 257,134.01 and 108,820.90

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Solution

The fourth proportional to 186,331.92, 257,134.01 and 108,820.90 is: 150,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,331.92 : 257,134.01 = 108,820.90 : x
  2. Step 2: Convert to fraction form
    186,331.92/257,134.01 = 108,820.90/x
  3. Step 3: Cross multiply
    186,331.92x = 257,134.01 × 108,820.90
  4. Step 4: Simplify right side
    186,331.92x = 27,981,554,388.81
  5. Step 5: Solve for x
    x = 27,981,554,388.81/186,331.92
  6. Step 6: Final answer
    x = 150,170.49

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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.