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Finding the Fourth Proportional to 109,979.48, 151,771.15 and 59,678.48

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Solution

The fourth proportional to 109,979.48, 151,771.15 and 59,678.48 is: 82,356.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,979.48 : 151,771.15 = 59,678.48 : x
  2. Step 2: Convert to fraction form
    109,979.48/151,771.15 = 59,678.48/x
  3. Step 3: Cross multiply
    109,979.48x = 151,771.15 × 59,678.48
  4. Step 4: Simplify right side
    109,979.48x = 9,057,471,993.88
  5. Step 5: Solve for x
    x = 9,057,471,993.88/109,979.48
  6. Step 6: Final answer
    x = 82,356.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.