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Finding the Fourth Proportional to 123,808.56, 170,859.90 and 70,092.48

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Solution

The fourth proportional to 123,808.56, 170,859.90 and 70,092.48 is: 96,729.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,808.56 : 170,859.90 = 70,092.48 : x
  2. Step 2: Convert to fraction form
    123,808.56/170,859.90 = 70,092.48/x
  3. Step 3: Cross multiply
    123,808.56x = 170,859.90 × 70,092.48
  4. Step 4: Simplify right side
    123,808.56x = 11,975,994,123.55
  5. Step 5: Solve for x
    x = 11,975,994,123.55/123,808.56
  6. Step 6: Final answer
    x = 96,729.94

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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.