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Finding the Third Proportional to 2,179,903.78 and 5,091,617.53

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Solution

The third proportional to 2,179,903.78 and 5,091,617.53 is: 11,892,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179,903.78 : 5,091,617.53 = 5,091,617.53 : x
  2. Step 2: Convert to fraction form
    2,179,903.78/5,091,617.53 = 5,091,617.53/x
  3. Step 3: Cross multiply
    2,179,903.78x = 5,091,617.53 × 5,091,617.53
  4. Step 4: Simplify right side
    2,179,903.78x = 25,924,569,084,532.34
  5. Step 5: Solve for x
    x = 25,924,569,084,532.34/2,179,903.78
  6. Step 6: Final answer
    x = 11,892,529.07

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.