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Finding the Fourth Proportional to 90,936.99, 136,359.81 and 52,998.48

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Solution

The fourth proportional to 90,936.99, 136,359.81 and 52,998.48 is: 79,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,936.99 : 136,359.81 = 52,998.48 : x
  2. Step 2: Convert to fraction form
    90,936.99/136,359.81 = 52,998.48/x
  3. Step 3: Cross multiply
    90,936.99x = 136,359.81 × 52,998.48
  4. Step 4: Simplify right side
    90,936.99x = 7,226,862,663.09
  5. Step 5: Solve for x
    x = 7,226,862,663.09/90,936.99
  6. Step 6: Final answer
    x = 79,471.10

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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.