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Finding the Third Proportional to 3,946,878.14 and 8,502,835.78

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Solution

The third proportional to 3,946,878.14 and 8,502,835.78 is: 18,317,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946,878.14 : 8,502,835.78 = 8,502,835.78 : x
  2. Step 2: Convert to fraction form
    3,946,878.14/8,502,835.78 = 8,502,835.78/x
  3. Step 3: Cross multiply
    3,946,878.14x = 8,502,835.78 × 8,502,835.78
  4. Step 4: Simplify right side
    3,946,878.14x = 72,298,216,322,905.30
  5. Step 5: Solve for x
    x = 72,298,216,322,905.30/3,946,878.14
  6. Step 6: Final answer
    x = 18,317,823.29

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.