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Finding the Third Proportional to 47,985.75 and 76,663.13

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Solution

The third proportional to 47,985.75 and 76,663.13 is: 122,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,985.75 : 76,663.13 = 76,663.13 : x
  2. Step 2: Convert to fraction form
    47,985.75/76,663.13 = 76,663.13/x
  3. Step 3: Cross multiply
    47,985.75x = 76,663.13 × 76,663.13
  4. Step 4: Simplify right side
    47,985.75x = 5,877,234,734.77
  5. Step 5: Solve for x
    x = 5,877,234,734.77/47,985.75
  6. Step 6: Final answer
    x = 122,478.75

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.