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Finding the Third Proportional to 52,915 and 79,913

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Solution

The third proportional to 52,915 and 79,913 is: 120,685.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,915 : 79,913 = 79,913 : x
  2. Step 2: Convert to fraction form
    52,915/79,913 = 79,913/x
  3. Step 3: Cross multiply
    52,915x = 79,913 × 79,913
  4. Step 4: Simplify right side
    52,915x = 6,386,087,569
  5. Step 5: Solve for x
    x = 6,386,087,569/52,915
  6. Step 6: Final answer
    x = 120,685.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.