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Finding the Fourth Proportional to 170,390.70, 235,129.57 and 93,909.57

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Solution

The fourth proportional to 170,390.70, 235,129.57 and 93,909.57 is: 129,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,390.70 : 235,129.57 = 93,909.57 : x
  2. Step 2: Convert to fraction form
    170,390.70/235,129.57 = 93,909.57/x
  3. Step 3: Cross multiply
    170,390.70x = 235,129.57 × 93,909.57
  4. Step 4: Simplify right side
    170,390.70x = 22,080,915,696.48
  5. Step 5: Solve for x
    x = 22,080,915,696.48/170,390.70
  6. Step 6: Final answer
    x = 129,589.91

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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.