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Finding the Fourth Proportional to 70,107,972.40, 105,161,958.60 and 70,107,972.40

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Solution

The fourth proportional to 70,107,972.40, 105,161,958.60 and 70,107,972.40 is: 105,161,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,107,972.40 : 105,161,958.60 = 70,107,972.40 : x
  2. Step 2: Convert to fraction form
    70,107,972.40/105,161,958.60 = 70,107,972.40/x
  3. Step 3: Cross multiply
    70,107,972.40x = 105,161,958.60 × 70,107,972.40
  4. Step 4: Simplify right side
    70,107,972.40x = 7,372,691,691,058,743
  5. Step 5: Solve for x
    x = 7,372,691,691,058,743/70,107,972.40
  6. Step 6: Final answer
    x = 105,161,958.60

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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.