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Finding the Fourth Proportional to 75,255.72, 103,616.46 and 63,901.32

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Solution

The fourth proportional to 75,255.72, 103,616.46 and 63,901.32 is: 87,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,255.72 : 103,616.46 = 63,901.32 : x
  2. Step 2: Convert to fraction form
    75,255.72/103,616.46 = 63,901.32/x
  3. Step 3: Cross multiply
    75,255.72x = 103,616.46 × 63,901.32
  4. Step 4: Simplify right side
    75,255.72x = 6,621,228,567.73
  5. Step 5: Solve for x
    x = 6,621,228,567.73/75,255.72
  6. Step 6: Final answer
    x = 87,983.06

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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.