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Finding the Fourth Proportional to 70,994.53, 97,972.97 and 39,164.56

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Solution

The fourth proportional to 70,994.53, 97,972.97 and 39,164.56 is: 54,047.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,994.53 : 97,972.97 = 39,164.56 : x
  2. Step 2: Convert to fraction form
    70,994.53/97,972.97 = 39,164.56/x
  3. Step 3: Cross multiply
    70,994.53x = 97,972.97 × 39,164.56
  4. Step 4: Simplify right side
    70,994.53x = 3,837,068,592.59
  5. Step 5: Solve for x
    x = 3,837,068,592.59/70,994.53
  6. Step 6: Final answer
    x = 54,047.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.