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Finding the Fourth Proportional to 122,309.11, 168,787.76 and 68,592.98

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Solution

The fourth proportional to 122,309.11, 168,787.76 and 68,592.98 is: 94,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,309.11 : 168,787.76 = 68,592.98 : x
  2. Step 2: Convert to fraction form
    122,309.11/168,787.76 = 68,592.98/x
  3. Step 3: Cross multiply
    122,309.11x = 168,787.76 × 68,592.98
  4. Step 4: Simplify right side
    122,309.11x = 11,577,655,057.79
  5. Step 5: Solve for x
    x = 11,577,655,057.79/122,309.11
  6. Step 6: Final answer
    x = 94,658.97

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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.