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Finding the Fourth Proportional to 111,703.10, 167,554.65 and 92,003.90

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Solution

The fourth proportional to 111,703.10, 167,554.65 and 92,003.90 is: 138,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,703.10 : 167,554.65 = 92,003.90 : x
  2. Step 2: Convert to fraction form
    111,703.10/167,554.65 = 92,003.90/x
  3. Step 3: Cross multiply
    111,703.10x = 167,554.65 × 92,003.90
  4. Step 4: Simplify right side
    111,703.10x = 15,415,681,263.14
  5. Step 5: Solve for x
    x = 15,415,681,263.14/111,703.10
  6. Step 6: Final answer
    x = 138,005.85

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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.