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Finding the Fourth Proportional to 114,249.71, 171,404.15 and 66,904.81

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Solution

The fourth proportional to 114,249.71, 171,404.15 and 66,904.81 is: 100,374.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,249.71 : 171,404.15 = 66,904.81 : x
  2. Step 2: Convert to fraction form
    114,249.71/171,404.15 = 66,904.81/x
  3. Step 3: Cross multiply
    114,249.71x = 171,404.15 × 66,904.81
  4. Step 4: Simplify right side
    114,249.71x = 11,467,761,325.93
  5. Step 5: Solve for x
    x = 11,467,761,325.93/114,249.71
  6. Step 6: Final answer
    x = 100,374.53

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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.