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Finding the Fourth Proportional to 608,605.66, 839,592.84 and 393,815.08

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Solution

The fourth proportional to 608,605.66, 839,592.84 and 393,815.08 is: 543,281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,605.66 : 839,592.84 = 393,815.08 : x
  2. Step 2: Convert to fraction form
    608,605.66/839,592.84 = 393,815.08/x
  3. Step 3: Cross multiply
    608,605.66x = 839,592.84 × 393,815.08
  4. Step 4: Simplify right side
    608,605.66x = 330,644,321,452.03
  5. Step 5: Solve for x
    x = 330,644,321,452.03/608,605.66
  6. Step 6: Final answer
    x = 543,281.71

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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.