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Finding the Fourth Proportional to 63,411.81, 87,509.21 and 36,553.83

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Solution

The fourth proportional to 63,411.81, 87,509.21 and 36,553.83 is: 50,444.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,411.81 : 87,509.21 = 36,553.83 : x
  2. Step 2: Convert to fraction form
    63,411.81/87,509.21 = 36,553.83/x
  3. Step 3: Cross multiply
    63,411.81x = 87,509.21 × 36,553.83
  4. Step 4: Simplify right side
    63,411.81x = 3,198,796,603.01
  5. Step 5: Solve for x
    x = 3,198,796,603.01/63,411.81
  6. Step 6: Final answer
    x = 50,444.81

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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.