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Finding the Fourth Proportional to 122,257.92, 168,724.04 and 68,546.40

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Solution

The fourth proportional to 122,257.92, 168,724.04 and 68,546.40 is: 94,598.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,257.92 : 168,724.04 = 68,546.40 : x
  2. Step 2: Convert to fraction form
    122,257.92/168,724.04 = 68,546.40/x
  3. Step 3: Cross multiply
    122,257.92x = 168,724.04 × 68,546.40
  4. Step 4: Simplify right side
    122,257.92x = 11,565,425,192.72
  5. Step 5: Solve for x
    x = 11,565,425,192.72/122,257.92
  6. Step 6: Final answer
    x = 94,598.58

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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.