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Finding the Fourth Proportional to 170,708.64, 255,918.37 and 70,806.48

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Solution

The fourth proportional to 170,708.64, 255,918.37 and 70,806.48 is: 106,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,708.64 : 255,918.37 = 70,806.48 : x
  2. Step 2: Convert to fraction form
    170,708.64/255,918.37 = 70,806.48/x
  3. Step 3: Cross multiply
    170,708.64x = 255,918.37 × 70,806.48
  4. Step 4: Simplify right side
    170,708.64x = 18,120,678,947.04
  5. Step 5: Solve for x
    x = 18,120,678,947.04/170,708.64
  6. Step 6: Final answer
    x = 106,149.75

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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.