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Finding the Fourth Proportional to 295,230.80, 442,846.20 and 261,405.20

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Solution

The fourth proportional to 295,230.80, 442,846.20 and 261,405.20 is: 392,107.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,230.80 : 442,846.20 = 261,405.20 : x
  2. Step 2: Convert to fraction form
    295,230.80/442,846.20 = 261,405.20/x
  3. Step 3: Cross multiply
    295,230.80x = 442,846.20 × 261,405.20
  4. Step 4: Simplify right side
    295,230.80x = 115,762,299,480.24
  5. Step 5: Solve for x
    x = 115,762,299,480.24/295,230.80
  6. Step 6: Final answer
    x = 392,107.80

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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.