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Finding the Fourth Proportional to 170,819.86, 235,713.42 and 99,185.86

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Solution

The fourth proportional to 170,819.86, 235,713.42 and 99,185.86 is: 136,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,819.86 : 235,713.42 = 99,185.86 : x
  2. Step 2: Convert to fraction form
    170,819.86/235,713.42 = 99,185.86/x
  3. Step 3: Cross multiply
    170,819.86x = 235,713.42 × 99,185.86
  4. Step 4: Simplify right side
    170,819.86x = 23,379,438,276.24
  5. Step 5: Solve for x
    x = 23,379,438,276.24/170,819.86
  6. Step 6: Final answer
    x = 136,866.04

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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.