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Finding the Third Proportional to 99,413,171.25 and 209,128,548

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Solution

The third proportional to 99,413,171.25 and 209,128,548 is: 439,929,126.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,413,171.25 : 209,128,548 = 209,128,548 : x
  2. Step 2: Convert to fraction form
    99,413,171.25/209,128,548 = 209,128,548/x
  3. Step 3: Cross multiply
    99,413,171.25x = 209,128,548 × 209,128,548
  4. Step 4: Simplify right side
    99,413,171.25x = 43,734,749,588,588,304
  5. Step 5: Solve for x
    x = 43,734,749,588,588,304/99,413,171.25
  6. Step 6: Final answer
    x = 439,929,126.48

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.