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Finding the Fourth Proportional to 35,990.53, 49,666.61 and 19,857.99

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Solution

The fourth proportional to 35,990.53, 49,666.61 and 19,857.99 is: 27,403.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,990.53 : 49,666.61 = 19,857.99 : x
  2. Step 2: Convert to fraction form
    35,990.53/49,666.61 = 19,857.99/x
  3. Step 3: Cross multiply
    35,990.53x = 49,666.61 × 19,857.99
  4. Step 4: Simplify right side
    35,990.53x = 986,278,945.42
  5. Step 5: Solve for x
    x = 986,278,945.42/35,990.53
  6. Step 6: Final answer
    x = 27,403.85

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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.