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Finding the Fourth Proportional to 119,449.39, 164,840.19 and 65,734.41

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Solution

The fourth proportional to 119,449.39, 164,840.19 and 65,734.41 is: 90,713.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,449.39 : 164,840.19 = 65,734.41 : x
  2. Step 2: Convert to fraction form
    119,449.39/164,840.19 = 65,734.41/x
  3. Step 3: Cross multiply
    119,449.39x = 164,840.19 × 65,734.41
  4. Step 4: Simplify right side
    119,449.39x = 10,835,672,078.36
  5. Step 5: Solve for x
    x = 10,835,672,078.36/119,449.39
  6. Step 6: Final answer
    x = 90,713.50

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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.