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Finding the Fourth Proportional to 71,867.52, 98,458.86 and 69,173.96

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Solution

The fourth proportional to 71,867.52, 98,458.86 and 69,173.96 is: 94,768.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,867.52 : 98,458.86 = 69,173.96 : x
  2. Step 2: Convert to fraction form
    71,867.52/98,458.86 = 69,173.96/x
  3. Step 3: Cross multiply
    71,867.52x = 98,458.86 × 69,173.96
  4. Step 4: Simplify right side
    71,867.52x = 6,810,789,266.64
  5. Step 5: Solve for x
    x = 6,810,789,266.64/71,867.52
  6. Step 6: Final answer
    x = 94,768.67

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.