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Finding the Fourth Proportional to 123,306.59, 170,163.35 and 68,858.49

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Solution

The fourth proportional to 123,306.59, 170,163.35 and 68,858.49 is: 95,024.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,306.59 : 170,163.35 = 68,858.49 : x
  2. Step 2: Convert to fraction form
    123,306.59/170,163.35 = 68,858.49/x
  3. Step 3: Cross multiply
    123,306.59x = 170,163.35 × 68,858.49
  4. Step 4: Simplify right side
    123,306.59x = 11,717,191,334.34
  5. Step 5: Solve for x
    x = 11,717,191,334.34/123,306.59
  6. Step 6: Final answer
    x = 95,024.86

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1.5x scale

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.