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Finding the Third Proportional to 18,853,959.34 and 40,498,178.56

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Solution

The third proportional to 18,853,959.34 and 40,498,178.56 is: 86,989,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853,959.34 : 40,498,178.56 = 40,498,178.56 : x
  2. Step 2: Convert to fraction form
    18,853,959.34/40,498,178.56 = 40,498,178.56/x
  3. Step 3: Cross multiply
    18,853,959.34x = 40,498,178.56 × 40,498,178.56
  4. Step 4: Simplify right side
    18,853,959.34x = 1,640,102,466,514,112
  5. Step 5: Solve for x
    x = 1,640,102,466,514,112/18,853,959.34
  6. Step 6: Final answer
    x = 86,989,816.65

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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.