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Finding the Fourth Proportional to 132,953.96, 199,328.70 and 68,843.40

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Solution

The fourth proportional to 132,953.96, 199,328.70 and 68,843.40 is: 103,212.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,953.96 : 199,328.70 = 68,843.40 : x
  2. Step 2: Convert to fraction form
    132,953.96/199,328.70 = 68,843.40/x
  3. Step 3: Cross multiply
    132,953.96x = 199,328.70 × 68,843.40
  4. Step 4: Simplify right side
    132,953.96x = 13,722,465,425.58
  5. Step 5: Solve for x
    x = 13,722,465,425.58/132,953.96
  6. Step 6: Final answer
    x = 103,212.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.