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Finding the Fourth Proportional to 113,599.68, 170,211.14 and 69,091.80

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Solution

The fourth proportional to 113,599.68, 170,211.14 and 69,091.80 is: 103,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,599.68 : 170,211.14 = 69,091.80 : x
  2. Step 2: Convert to fraction form
    113,599.68/170,211.14 = 69,091.80/x
  3. Step 3: Cross multiply
    113,599.68x = 170,211.14 × 69,091.80
  4. Step 4: Simplify right side
    113,599.68x = 11,760,194,042.65
  5. Step 5: Solve for x
    x = 11,760,194,042.65/113,599.68
  6. Step 6: Final answer
    x = 103,523.13

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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.