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Finding the Third Proportional to 77,881.50 and 168,246

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Solution

The third proportional to 77,881.50 and 168,246 is: 363,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,881.50 : 168,246 = 168,246 : x
  2. Step 2: Convert to fraction form
    77,881.50/168,246 = 168,246/x
  3. Step 3: Cross multiply
    77,881.50x = 168,246 × 168,246
  4. Step 4: Simplify right side
    77,881.50x = 28,306,716,516
  5. Step 5: Solve for x
    x = 28,306,716,516/77,881.50
  6. Step 6: Final answer
    x = 363,458.80

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.