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Finding the Fourth Proportional to 141,797.16, 212,826.96 and 71,725.68

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Solution

The fourth proportional to 141,797.16, 212,826.96 and 71,725.68 is: 107,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,797.16 : 212,826.96 = 71,725.68 : x
  2. Step 2: Convert to fraction form
    141,797.16/212,826.96 = 71,725.68/x
  3. Step 3: Cross multiply
    141,797.16x = 212,826.96 × 71,725.68
  4. Step 4: Simplify right side
    141,797.16x = 15,265,158,428.33
  5. Step 5: Solve for x
    x = 15,265,158,428.33/141,797.16
  6. Step 6: Final answer
    x = 107,654.90

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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.