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Finding the Third Proportional to 74,351,421 and 161,055,018

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Solution

The third proportional to 74,351,421 and 161,055,018 is: 348,866,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,351,421 : 161,055,018 = 161,055,018 : x
  2. Step 2: Convert to fraction form
    74,351,421/161,055,018 = 161,055,018/x
  3. Step 3: Cross multiply
    74,351,421x = 161,055,018 × 161,055,018
  4. Step 4: Simplify right side
    74,351,421x = 25,938,718,822,980,324
  5. Step 5: Solve for x
    x = 25,938,718,822,980,324/74,351,421
  6. Step 6: Final answer
    x = 348,866,483.98

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.