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Finding the Fourth Proportional to 122,447.88, 168,977.88 and 68,732.94

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Solution

The fourth proportional to 122,447.88, 168,977.88 and 68,732.94 is: 94,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,447.88 : 168,977.88 = 68,732.94 : x
  2. Step 2: Convert to fraction form
    122,447.88/168,977.88 = 68,732.94/x
  3. Step 3: Cross multiply
    122,447.88x = 168,977.88 × 68,732.94
  4. Step 4: Simplify right side
    122,447.88x = 11,614,346,487.37
  5. Step 5: Solve for x
    x = 11,614,346,487.37/122,447.88
  6. Step 6: Final answer
    x = 94,851.35

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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.