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Finding the Third Proportional to 39,549,876 and 86,640,285

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Solution

The third proportional to 39,549,876 and 86,640,285 is: 189,799,305.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,549,876 : 86,640,285 = 86,640,285 : x
  2. Step 2: Convert to fraction form
    39,549,876/86,640,285 = 86,640,285/x
  3. Step 3: Cross multiply
    39,549,876x = 86,640,285 × 86,640,285
  4. Step 4: Simplify right side
    39,549,876x = 7,506,538,984,881,225
  5. Step 5: Solve for x
    x = 7,506,538,984,881,225/39,549,876
  6. Step 6: Final answer
    x = 189,799,305.18

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.