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Finding the Fourth Proportional to 79,858.91, 119,866.27 and 65,960.53

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Solution

The fourth proportional to 79,858.91, 119,866.27 and 65,960.53 is: 99,005.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,858.91 : 119,866.27 = 65,960.53 : x
  2. Step 2: Convert to fraction form
    79,858.91/119,866.27 = 65,960.53/x
  3. Step 3: Cross multiply
    79,858.91x = 119,866.27 × 65,960.53
  4. Step 4: Simplify right side
    79,858.91x = 7,906,442,698.32
  5. Step 5: Solve for x
    x = 7,906,442,698.32/79,858.91
  6. Step 6: Final answer
    x = 99,005.14

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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.