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Finding the Fourth Proportional to 405,227.80, 606,966.90 and 263,510.20

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Solution

The fourth proportional to 405,227.80, 606,966.90 and 263,510.20 is: 394,696.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,227.80 : 606,966.90 = 263,510.20 : x
  2. Step 2: Convert to fraction form
    405,227.80/606,966.90 = 263,510.20/x
  3. Step 3: Cross multiply
    405,227.80x = 606,966.90 × 263,510.20
  4. Step 4: Simplify right side
    405,227.80x = 159,941,969,212.38
  5. Step 5: Solve for x
    x = 159,941,969,212.38/405,227.80
  6. Step 6: Final answer
    x = 394,696.44

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1.5x scale

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.