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Finding the Fourth Proportional to 111,603.36, 167,429.70 and 36,720.48

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Solution

The fourth proportional to 111,603.36, 167,429.70 and 36,720.48 is: 55,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,603.36 : 167,429.70 = 36,720.48 : x
  2. Step 2: Convert to fraction form
    111,603.36/167,429.70 = 36,720.48/x
  3. Step 3: Cross multiply
    111,603.36x = 167,429.70 × 36,720.48
  4. Step 4: Simplify right side
    111,603.36x = 6,148,098,950.26
  5. Step 5: Solve for x
    x = 6,148,098,950.26/111,603.36
  6. Step 6: Final answer
    x = 55,088.83

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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.