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Finding the Fourth Proportional to 122,493.36, 169,036.56 and 74,826.48

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Solution

The fourth proportional to 122,493.36, 169,036.56 and 74,826.48 is: 103,257.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,493.36 : 169,036.56 = 74,826.48 : x
  2. Step 2: Convert to fraction form
    122,493.36/169,036.56 = 74,826.48/x
  3. Step 3: Cross multiply
    122,493.36x = 169,036.56 × 74,826.48
  4. Step 4: Simplify right side
    122,493.36x = 12,648,410,776.11
  5. Step 5: Solve for x
    x = 12,648,410,776.11/122,493.36
  6. Step 6: Final answer
    x = 103,257.93

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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.