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Finding the Fourth Proportional to 73,950.68, 102,099.62 and 65,979.08

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Solution

The fourth proportional to 73,950.68, 102,099.62 and 65,979.08 is: 91,093.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,950.68 : 102,099.62 = 65,979.08 : x
  2. Step 2: Convert to fraction form
    73,950.68/102,099.62 = 65,979.08/x
  3. Step 3: Cross multiply
    73,950.68x = 102,099.62 × 65,979.08
  4. Step 4: Simplify right side
    73,950.68x = 6,736,438,995.95
  5. Step 5: Solve for x
    x = 6,736,438,995.95/73,950.68
  6. Step 6: Final answer
    x = 91,093.67

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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.