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Finding the Fourth Proportional to 80,603.14, 111,224.73 and 74,658.82

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Solution

The fourth proportional to 80,603.14, 111,224.73 and 74,658.82 is: 103,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,603.14 : 111,224.73 = 74,658.82 : x
  2. Step 2: Convert to fraction form
    80,603.14/111,224.73 = 74,658.82/x
  3. Step 3: Cross multiply
    80,603.14x = 111,224.73 × 74,658.82
  4. Step 4: Simplify right side
    80,603.14x = 8,303,907,096.62
  5. Step 5: Solve for x
    x = 8,303,907,096.62/80,603.14
  6. Step 6: Final answer
    x = 103,022.13

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1.5x scale

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.