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Finding the Fourth Proportional to 285,633.05, 394,178.52 and 156,562.91

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Solution

The fourth proportional to 285,633.05, 394,178.52 and 156,562.91 is: 216,059.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,633.05 : 394,178.52 = 156,562.91 : x
  2. Step 2: Convert to fraction form
    285,633.05/394,178.52 = 156,562.91/x
  3. Step 3: Cross multiply
    285,633.05x = 394,178.52 × 156,562.91
  4. Step 4: Simplify right side
    285,633.05x = 61,713,734,179.80
  5. Step 5: Solve for x
    x = 61,713,734,179.80/285,633.05
  6. Step 6: Final answer
    x = 216,059.50

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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.