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Finding the Fourth Proportional to 87,295.70, 120,464.83 and 53,361.02

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Solution

The fourth proportional to 87,295.70, 120,464.83 and 53,361.02 is: 73,636.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,295.70 : 120,464.83 = 53,361.02 : x
  2. Step 2: Convert to fraction form
    87,295.70/120,464.83 = 53,361.02/x
  3. Step 3: Cross multiply
    87,295.70x = 120,464.83 × 53,361.02
  4. Step 4: Simplify right side
    87,295.70x = 6,428,126,202.93
  5. Step 5: Solve for x
    x = 6,428,126,202.93/87,295.70
  6. Step 6: Final answer
    x = 73,636.23

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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.