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Finding the Fourth Proportional to 200,011.82, 299,984.13 and 66,891.87

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Solution

The fourth proportional to 200,011.82, 299,984.13 and 66,891.87 is: 100,326.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,011.82 : 299,984.13 = 66,891.87 : x
  2. Step 2: Convert to fraction form
    200,011.82/299,984.13 = 66,891.87/x
  3. Step 3: Cross multiply
    200,011.82x = 299,984.13 × 66,891.87
  4. Step 4: Simplify right side
    200,011.82x = 20,066,499,426.02
  5. Step 5: Solve for x
    x = 20,066,499,426.02/200,011.82
  6. Step 6: Final answer
    x = 100,326.57

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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.