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Finding the Fourth Proportional to 170,708.07, 235,467.49 and 103,640.07

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Solution

The fourth proportional to 170,708.07, 235,467.49 and 103,640.07 is: 142,956.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,708.07 : 235,467.49 = 103,640.07 : x
  2. Step 2: Convert to fraction form
    170,708.07/235,467.49 = 103,640.07/x
  3. Step 3: Cross multiply
    170,708.07x = 235,467.49 × 103,640.07
  4. Step 4: Simplify right side
    170,708.07x = 24,403,867,146.32
  5. Step 5: Solve for x
    x = 24,403,867,146.32/170,708.07
  6. Step 6: Final answer
    x = 142,956.73

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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.