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Finding the Third Proportional to 58,121,921 and 126,458,509

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Solution

The third proportional to 58,121,921 and 126,458,509 is: 275,141,533.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,121,921 : 126,458,509 = 126,458,509 : x
  2. Step 2: Convert to fraction form
    58,121,921/126,458,509 = 126,458,509/x
  3. Step 3: Cross multiply
    58,121,921x = 126,458,509 × 126,458,509
  4. Step 4: Simplify right side
    58,121,921x = 15,991,754,498,503,080
  5. Step 5: Solve for x
    x = 15,991,754,498,503,080/58,121,921
  6. Step 6: Final answer
    x = 275,141,533.92

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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.