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Finding the Fourth Proportional to 170,792.68, 256,345.28 and 86,610.94

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Solution

The fourth proportional to 170,792.68, 256,345.28 and 86,610.94 is: 129,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,792.68 : 256,345.28 = 86,610.94 : x
  2. Step 2: Convert to fraction form
    170,792.68/256,345.28 = 86,610.94/x
  3. Step 3: Cross multiply
    170,792.68x = 256,345.28 × 86,610.94
  4. Step 4: Simplify right side
    170,792.68x = 22,202,305,665.36
  5. Step 5: Solve for x
    x = 22,202,305,665.36/170,792.68
  6. Step 6: Final answer
    x = 129,995.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.