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Finding the Fourth Proportional to 126,361,642, 189,542,463 and 30,623,530

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Solution

The fourth proportional to 126,361,642, 189,542,463 and 30,623,530 is: 45,935,295

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,361,642 : 189,542,463 = 30,623,530 : x
  2. Step 2: Convert to fraction form
    126,361,642/189,542,463 = 30,623,530/x
  3. Step 3: Cross multiply
    126,361,642x = 189,542,463 × 30,623,530
  4. Step 4: Simplify right side
    126,361,642x = 5,804,459,301,954,390
  5. Step 5: Solve for x
    x = 5,804,459,301,954,390/126,361,642
  6. Step 6: Final answer
    x = 45,935,295

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.