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Finding the Third Proportional to 47,360 and 78,924

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Solution

The third proportional to 47,360 and 78,924 is: 131,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,360 : 78,924 = 78,924 : x
  2. Step 2: Convert to fraction form
    47,360/78,924 = 78,924/x
  3. Step 3: Cross multiply
    47,360x = 78,924 × 78,924
  4. Step 4: Simplify right side
    47,360x = 6,228,997,776
  5. Step 5: Solve for x
    x = 6,228,997,776/47,360
  6. Step 6: Final answer
    x = 131,524.45

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.