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Finding the Third Proportional to 74,372,786 and 161,915,236

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Solution

The third proportional to 74,372,786 and 161,915,236 is: 352,501,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,372,786 : 161,915,236 = 161,915,236 : x
  2. Step 2: Convert to fraction form
    74,372,786/161,915,236 = 161,915,236/x
  3. Step 3: Cross multiply
    74,372,786x = 161,915,236 × 161,915,236
  4. Step 4: Simplify right side
    74,372,786x = 26,216,543,648,935,696
  5. Step 5: Solve for x
    x = 26,216,543,648,935,696/74,372,786
  6. Step 6: Final answer
    x = 352,501,836.48

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.