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Finding the Fourth Proportional to 74,267, 111,239.14 and 45,716.93

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Solution

The fourth proportional to 74,267, 111,239.14 and 45,716.93 is: 68,476.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,267 : 111,239.14 = 45,716.93 : x
  2. Step 2: Convert to fraction form
    74,267/111,239.14 = 45,716.93/x
  3. Step 3: Cross multiply
    74,267x = 111,239.14 × 45,716.93
  4. Step 4: Simplify right side
    74,267x = 5,085,511,976.64
  5. Step 5: Solve for x
    x = 5,085,511,976.64/74,267
  6. Step 6: Final answer
    x = 68,476.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.