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Finding the Fourth Proportional to 70,729.58, 97,589.69 and 44,878.72

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Solution

The fourth proportional to 70,729.58, 97,589.69 and 44,878.72 is: 61,921.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,729.58 : 97,589.69 = 44,878.72 : x
  2. Step 2: Convert to fraction form
    70,729.58/97,589.69 = 44,878.72/x
  3. Step 3: Cross multiply
    70,729.58x = 97,589.69 × 44,878.72
  4. Step 4: Simplify right side
    70,729.58x = 4,379,699,660.05
  5. Step 5: Solve for x
    x = 4,379,699,660.05/70,729.58
  6. Step 6: Final answer
    x = 61,921.75

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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.