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Finding the Fourth Proportional to 608,310.18, 839,189.02 and 393,519.51

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Solution

The fourth proportional to 608,310.18, 839,189.02 and 393,519.51 is: 542,876.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,310.18 : 839,189.02 = 393,519.51 : x
  2. Step 2: Convert to fraction form
    608,310.18/839,189.02 = 393,519.51/x
  3. Step 3: Cross multiply
    608,310.18x = 839,189.02 × 393,519.51
  4. Step 4: Simplify right side
    608,310.18x = 330,237,251,947.78
  5. Step 5: Solve for x
    x = 330,237,251,947.78/608,310.18
  6. Step 6: Final answer
    x = 542,876.42

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Double scale
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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.