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Finding the Fourth Proportional to 122,394.17, 168,903.50 and 68,679.06

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Solution

The fourth proportional to 122,394.17, 168,903.50 and 68,679.06 is: 94,776.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,394.17 : 168,903.50 = 68,679.06 : x
  2. Step 2: Convert to fraction form
    122,394.17/168,903.50 = 68,679.06/x
  3. Step 3: Cross multiply
    122,394.17x = 168,903.50 × 68,679.06
  4. Step 4: Simplify right side
    122,394.17x = 11,600,132,633.93
  5. Step 5: Solve for x
    x = 11,600,132,633.93/122,394.17
  6. Step 6: Final answer
    x = 94,776.84

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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.