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Finding the Fourth Proportional to 235,891.06, 353,891.86 and 78,119.52

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Solution

The fourth proportional to 235,891.06, 353,891.86 and 78,119.52 is: 117,197.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,891.06 : 353,891.86 = 78,119.52 : x
  2. Step 2: Convert to fraction form
    235,891.06/353,891.86 = 78,119.52/x
  3. Step 3: Cross multiply
    235,891.06x = 353,891.86 × 78,119.52
  4. Step 4: Simplify right side
    235,891.06x = 27,645,862,235.11
  5. Step 5: Solve for x
    x = 27,645,862,235.11/235,891.06
  6. Step 6: Final answer
    x = 117,197.58

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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.