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Finding the Fourth Proportional to 111,207.92, 153,481.84 and 65,882.40

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Solution

The fourth proportional to 111,207.92, 153,481.84 and 65,882.40 is: 90,926.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,207.92 : 153,481.84 = 65,882.40 : x
  2. Step 2: Convert to fraction form
    111,207.92/153,481.84 = 65,882.40/x
  3. Step 3: Cross multiply
    111,207.92x = 153,481.84 × 65,882.40
  4. Step 4: Simplify right side
    111,207.92x = 10,111,751,975.62
  5. Step 5: Solve for x
    x = 10,111,751,975.62/111,207.92
  6. Step 6: Final answer
    x = 90,926.55

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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.