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Finding the Fourth Proportional to 408,143.80, 611,924.10 and 183,320.20

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Solution

The fourth proportional to 408,143.80, 611,924.10 and 183,320.20 is: 274,849.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,143.80 : 611,924.10 = 183,320.20 : x
  2. Step 2: Convert to fraction form
    408,143.80/611,924.10 = 183,320.20/x
  3. Step 3: Cross multiply
    408,143.80x = 611,924.10 × 183,320.20
  4. Step 4: Simplify right side
    408,143.80x = 112,178,048,396.82
  5. Step 5: Solve for x
    x = 112,178,048,396.82/408,143.80
  6. Step 6: Final answer
    x = 274,849.33

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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.