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Finding the Fourth Proportional to 619,323.20, 854,662.44 and 343,678.28

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Solution

The fourth proportional to 619,323.20, 854,662.44 and 343,678.28 is: 474,274.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,323.20 : 854,662.44 = 343,678.28 : x
  2. Step 2: Convert to fraction form
    619,323.20/854,662.44 = 343,678.28/x
  3. Step 3: Cross multiply
    619,323.20x = 854,662.44 × 343,678.28
  4. Step 4: Simplify right side
    619,323.20x = 293,728,917,359.80
  5. Step 5: Solve for x
    x = 293,728,917,359.80/619,323.20
  6. Step 6: Final answer
    x = 474,274.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.