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Finding the Third Proportional to 42,986,393.72 and 90,824,687.44

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Solution

The third proportional to 42,986,393.72 and 90,824,687.44 is: 191,900,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,986,393.72 : 90,824,687.44 = 90,824,687.44 : x
  2. Step 2: Convert to fraction form
    42,986,393.72/90,824,687.44 = 90,824,687.44/x
  3. Step 3: Cross multiply
    42,986,393.72x = 90,824,687.44 × 90,824,687.44
  4. Step 4: Simplify right side
    42,986,393.72x = 8,249,123,848,119,570
  5. Step 5: Solve for x
    x = 8,249,123,848,119,570/42,986,393.72
  6. Step 6: Final answer
    x = 191,900,811.73

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.