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Finding the Fourth Proportional to 123,800.64, 170,844.88 and 67,212.02

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Solution

The fourth proportional to 123,800.64, 170,844.88 and 67,212.02 is: 92,752.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,800.64 : 170,844.88 = 67,212.02 : x
  2. Step 2: Convert to fraction form
    123,800.64/170,844.88 = 67,212.02/x
  3. Step 3: Cross multiply
    123,800.64x = 170,844.88 × 67,212.02
  4. Step 4: Simplify right side
    123,800.64x = 11,482,829,491.46
  5. Step 5: Solve for x
    x = 11,482,829,491.46/123,800.64
  6. Step 6: Final answer
    x = 92,752.59

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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.