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Finding the Fourth Proportional to 123,568.69, 170,527.68 and 69,856.88

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Solution

The fourth proportional to 123,568.69, 170,527.68 and 69,856.88 is: 96,404.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,568.69 : 170,527.68 = 69,856.88 : x
  2. Step 2: Convert to fraction form
    123,568.69/170,527.68 = 69,856.88/x
  3. Step 3: Cross multiply
    123,568.69x = 170,527.68 × 69,856.88
  4. Step 4: Simplify right side
    123,568.69x = 11,912,531,785.02
  5. Step 5: Solve for x
    x = 11,912,531,785.02/123,568.69
  6. Step 6: Final answer
    x = 96,404.13

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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.