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Finding the Fourth Proportional to 141,067.80, 211,601.70 and 105,816.60

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Solution

The fourth proportional to 141,067.80, 211,601.70 and 105,816.60 is: 158,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,067.80 : 211,601.70 = 105,816.60 : x
  2. Step 2: Convert to fraction form
    141,067.80/211,601.70 = 105,816.60/x
  3. Step 3: Cross multiply
    141,067.80x = 211,601.70 × 105,816.60
  4. Step 4: Simplify right side
    141,067.80x = 22,390,972,448.22
  5. Step 5: Solve for x
    x = 22,390,972,448.22/141,067.80
  6. Step 6: Final answer
    x = 158,724.90

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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.