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Finding the Fourth Proportional to 122,239.62, 168,689.65 and 68,524.47

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Solution

The fourth proportional to 122,239.62, 168,689.65 and 68,524.47 is: 94,563.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,239.62 : 168,689.65 = 68,524.47 : x
  2. Step 2: Convert to fraction form
    122,239.62/168,689.65 = 68,524.47/x
  3. Step 3: Cross multiply
    122,239.62x = 168,689.65 × 68,524.47
  4. Step 4: Simplify right side
    122,239.62x = 11,559,368,860.74
  5. Step 5: Solve for x
    x = 11,559,368,860.74/122,239.62
  6. Step 6: Final answer
    x = 94,563.19

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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.