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Finding the Third Proportional to 71,113.50 and 156,987

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Solution

The third proportional to 71,113.50 and 156,987 is: 346,557.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,113.50 : 156,987 = 156,987 : x
  2. Step 2: Convert to fraction form
    71,113.50/156,987 = 156,987/x
  3. Step 3: Cross multiply
    71,113.50x = 156,987 × 156,987
  4. Step 4: Simplify right side
    71,113.50x = 24,644,918,169
  5. Step 5: Solve for x
    x = 24,644,918,169/71,113.50
  6. Step 6: Final answer
    x = 346,557.52

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.