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Finding the Third Proportional to 47,320 and 70,656

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Solution

The third proportional to 47,320 and 70,656 is: 105,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,320 : 70,656 = 70,656 : x
  2. Step 2: Convert to fraction form
    47,320/70,656 = 70,656/x
  3. Step 3: Cross multiply
    47,320x = 70,656 × 70,656
  4. Step 4: Simplify right side
    47,320x = 4,992,270,336
  5. Step 5: Solve for x
    x = 4,992,270,336/47,320
  6. Step 6: Final answer
    x = 105,500.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.