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Finding the Third Proportional to 30,691.50 and 47,394

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Solution

The third proportional to 30,691.50 and 47,394 is: 73,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,691.50 : 47,394 = 47,394 : x
  2. Step 2: Convert to fraction form
    30,691.50/47,394 = 47,394/x
  3. Step 3: Cross multiply
    30,691.50x = 47,394 × 47,394
  4. Step 4: Simplify right side
    30,691.50x = 2,246,191,236
  5. Step 5: Solve for x
    x = 2,246,191,236/30,691.50
  6. Step 6: Final answer
    x = 73,186.10

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.