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Finding the Fourth Proportional to 39,600.81, 59,410.49 and 11,521.49

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Solution

The fourth proportional to 39,600.81, 59,410.49 and 11,521.49 is: 17,284.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,600.81 : 59,410.49 = 11,521.49 : x
  2. Step 2: Convert to fraction form
    39,600.81/59,410.49 = 11,521.49/x
  3. Step 3: Cross multiply
    39,600.81x = 59,410.49 × 11,521.49
  4. Step 4: Simplify right side
    39,600.81x = 684,497,011.77
  5. Step 5: Solve for x
    x = 684,497,011.77/39,600.81
  6. Step 6: Final answer
    x = 17,284.92

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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.