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Finding the Fourth Proportional to 640,777.14, 961,223.12 and 185,361.22

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Solution

The fourth proportional to 640,777.14, 961,223.12 and 185,361.22 is: 278,058.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,777.14 : 961,223.12 = 185,361.22 : x
  2. Step 2: Convert to fraction form
    640,777.14/961,223.12 = 185,361.22/x
  3. Step 3: Cross multiply
    640,777.14x = 961,223.12 × 185,361.22
  4. Step 4: Simplify right side
    640,777.14x = 178,173,491,185.23
  5. Step 5: Solve for x
    x = 178,173,491,185.23/640,777.14
  6. Step 6: Final answer
    x = 278,058.44

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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.