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Finding the Fourth Proportional to 296,822.80, 445,234.20 and 75,206.80

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Solution

The fourth proportional to 296,822.80, 445,234.20 and 75,206.80 is: 112,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,822.80 : 445,234.20 = 75,206.80 : x
  2. Step 2: Convert to fraction form
    296,822.80/445,234.20 = 75,206.80/x
  3. Step 3: Cross multiply
    296,822.80x = 445,234.20 × 75,206.80
  4. Step 4: Simplify right side
    296,822.80x = 33,484,639,432.56
  5. Step 5: Solve for x
    x = 33,484,639,432.56/296,822.80
  6. Step 6: Final answer
    x = 112,810.20

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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.