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Finding the Fourth Proportional to 404,975.28, 558,871.80 and 235,209.40

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Solution

The fourth proportional to 404,975.28, 558,871.80 and 235,209.40 is: 324,592.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,975.28 : 558,871.80 = 235,209.40 : x
  2. Step 2: Convert to fraction form
    404,975.28/558,871.80 = 235,209.40/x
  3. Step 3: Cross multiply
    404,975.28x = 558,871.80 × 235,209.40
  4. Step 4: Simplify right side
    404,975.28x = 131,451,900,754.92
  5. Step 5: Solve for x
    x = 131,451,900,754.92/404,975.28
  6. Step 6: Final answer
    x = 324,592.41

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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.