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Finding the Fourth Proportional to 110,911.56, 153,040.26 and 63,165.80

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Solution

The fourth proportional to 110,911.56, 153,040.26 and 63,165.80 is: 87,158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,911.56 : 153,040.26 = 63,165.80 : x
  2. Step 2: Convert to fraction form
    110,911.56/153,040.26 = 63,165.80/x
  3. Step 3: Cross multiply
    110,911.56x = 153,040.26 × 63,165.80
  4. Step 4: Simplify right side
    110,911.56x = 9,666,910,455.11
  5. Step 5: Solve for x
    x = 9,666,910,455.11/110,911.56
  6. Step 6: Final answer
    x = 87,158.73

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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.