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Finding the Fourth Proportional to 65,163.99, 89,935.98 and 41,292.90

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Solution

The fourth proportional to 65,163.99, 89,935.98 and 41,292.90 is: 56,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,163.99 : 89,935.98 = 41,292.90 : x
  2. Step 2: Convert to fraction form
    65,163.99/89,935.98 = 41,292.90/x
  3. Step 3: Cross multiply
    65,163.99x = 89,935.98 × 41,292.90
  4. Step 4: Simplify right side
    65,163.99x = 3,713,717,428.54
  5. Step 5: Solve for x
    x = 3,713,717,428.54/65,163.99
  6. Step 6: Final answer
    x = 56,990.33

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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.