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Finding the Fourth Proportional to 111,390.99, 167,130.23 and 49,017.75

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Solution

The fourth proportional to 111,390.99, 167,130.23 and 49,017.75 is: 73,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,390.99 : 167,130.23 = 49,017.75 : x
  2. Step 2: Convert to fraction form
    111,390.99/167,130.23 = 49,017.75/x
  3. Step 3: Cross multiply
    111,390.99x = 167,130.23 × 49,017.75
  4. Step 4: Simplify right side
    111,390.99x = 8,192,347,586.49
  5. Step 5: Solve for x
    x = 8,192,347,586.49/111,390.99
  6. Step 6: Final answer
    x = 73,545.87

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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.