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Finding the Fourth Proportional to 122,062.70, 168,427.04 and 68,349.98

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Solution

The fourth proportional to 122,062.70, 168,427.04 and 68,349.98 is: 94,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,062.70 : 168,427.04 = 68,349.98 : x
  2. Step 2: Convert to fraction form
    122,062.70/168,427.04 = 68,349.98/x
  3. Step 3: Cross multiply
    122,062.70x = 168,427.04 × 68,349.98
  4. Step 4: Simplify right side
    122,062.70x = 11,511,984,815.46
  5. Step 5: Solve for x
    x = 11,511,984,815.46/122,062.70
  6. Step 6: Final answer
    x = 94,312.06

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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.