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Finding the Fourth Proportional to 111,513.99, 167,235.75 and 36,621.80

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Solution

The fourth proportional to 111,513.99, 167,235.75 and 36,621.80 is: 54,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,513.99 : 167,235.75 = 36,621.80 : x
  2. Step 2: Convert to fraction form
    111,513.99/167,235.75 = 36,621.80/x
  3. Step 3: Cross multiply
    111,513.99x = 167,235.75 × 36,621.80
  4. Step 4: Simplify right side
    111,513.99x = 6,124,473,353.17
  5. Step 5: Solve for x
    x = 6,124,473,353.17/111,513.99
  6. Step 6: Final answer
    x = 54,921.12

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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.