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Finding the Fourth Proportional to 363,065.20, 501,043.79 and 201,931.90

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Solution

The fourth proportional to 363,065.20, 501,043.79 and 201,931.90 is: 278,673.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,065.20 : 501,043.79 = 201,931.90 : x
  2. Step 2: Convert to fraction form
    363,065.20/501,043.79 = 201,931.90/x
  3. Step 3: Cross multiply
    363,065.20x = 501,043.79 × 201,931.90
  4. Step 4: Simplify right side
    363,065.20x = 101,176,724,497.90
  5. Step 5: Solve for x
    x = 101,176,724,497.90/363,065.20
  6. Step 6: Final answer
    x = 278,673.71

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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.