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Finding the Fourth Proportional to 608,604.66, 839,591.46 and 393,814.08

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Solution

The fourth proportional to 608,604.66, 839,591.46 and 393,814.08 is: 543,280.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,604.66 : 839,591.46 = 393,814.08 : x
  2. Step 2: Convert to fraction form
    608,604.66/839,591.46 = 393,814.08/x
  3. Step 3: Cross multiply
    608,604.66x = 839,591.46 × 393,814.08
  4. Step 4: Simplify right side
    608,604.66x = 330,642,938,395.76
  5. Step 5: Solve for x
    x = 330,642,938,395.76/608,604.66
  6. Step 6: Final answer
    x = 543,280.33

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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.