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Finding the Fourth Proportional to 585,836.20, 876,680.70 and 399,212.20

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Solution

The fourth proportional to 585,836.20, 876,680.70 and 399,212.20 is: 597,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,836.20 : 876,680.70 = 399,212.20 : x
  2. Step 2: Convert to fraction form
    585,836.20/876,680.70 = 399,212.20/x
  3. Step 3: Cross multiply
    585,836.20x = 876,680.70 × 399,212.20
  4. Step 4: Simplify right side
    585,836.20x = 349,981,630,944.54
  5. Step 5: Solve for x
    x = 349,981,630,944.54/585,836.20
  6. Step 6: Final answer
    x = 597,405.27

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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.