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Finding the Fourth Proportional to 123,672.76, 170,668.40 and 69,956.62

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Solution

The fourth proportional to 123,672.76, 170,668.40 and 69,956.62 is: 96,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,672.76 : 170,668.40 = 69,956.62 : x
  2. Step 2: Convert to fraction form
    123,672.76/170,668.40 = 69,956.62/x
  3. Step 3: Cross multiply
    123,672.76x = 170,668.40 × 69,956.62
  4. Step 4: Simplify right side
    123,672.76x = 11,939,384,404.81
  5. Step 5: Solve for x
    x = 11,939,384,404.81/123,672.76
  6. Step 6: Final answer
    x = 96,540.13

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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.