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Finding the Fourth Proportional to 196,651.20, 294,919.20 and 91,444.80

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Solution

The fourth proportional to 196,651.20, 294,919.20 and 91,444.80 is: 137,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,651.20 : 294,919.20 = 91,444.80 : x
  2. Step 2: Convert to fraction form
    196,651.20/294,919.20 = 91,444.80/x
  3. Step 3: Cross multiply
    196,651.20x = 294,919.20 × 91,444.80
  4. Step 4: Simplify right side
    196,651.20x = 26,968,827,260.16
  5. Step 5: Solve for x
    x = 26,968,827,260.16/196,651.20
  6. Step 6: Final answer
    x = 137,140.42

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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.