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Finding the Fourth Proportional to 73,872.65, 103,684.15 and 73,872.65

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Solution

The fourth proportional to 73,872.65, 103,684.15 and 73,872.65 is: 103,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872.65 : 103,684.15 = 73,872.65 : x
  2. Step 2: Convert to fraction form
    73,872.65/103,684.15 = 73,872.65/x
  3. Step 3: Cross multiply
    73,872.65x = 103,684.15 × 73,872.65
  4. Step 4: Simplify right side
    73,872.65x = 7,659,422,923.50
  5. Step 5: Solve for x
    x = 7,659,422,923.50/73,872.65
  6. Step 6: Final answer
    x = 103,684.15

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.