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Finding the Fourth Proportional to 122,393.44, 168,904.56 and 68,690.08

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Solution

The fourth proportional to 122,393.44, 168,904.56 and 68,690.08 is: 94,793.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,393.44 : 168,904.56 = 68,690.08 : x
  2. Step 2: Convert to fraction form
    122,393.44/168,904.56 = 68,690.08/x
  3. Step 3: Cross multiply
    122,393.44x = 168,904.56 × 68,690.08
  4. Step 4: Simplify right side
    122,393.44x = 11,602,067,738.76
  5. Step 5: Solve for x
    x = 11,602,067,738.76/122,393.44
  6. Step 6: Final answer
    x = 94,793.22

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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.