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Finding the Fourth Proportional to 866,369.40, 1,299,359.70 and 416,860.71

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Solution

The fourth proportional to 866,369.40, 1,299,359.70 and 416,860.71 is: 625,197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,369.40 : 1,299,359.70 = 416,860.71 : x
  2. Step 2: Convert to fraction form
    866,369.40/1,299,359.70 = 416,860.71/x
  3. Step 3: Cross multiply
    866,369.40x = 1,299,359.70 × 416,860.71
  4. Step 4: Simplify right side
    866,369.40x = 541,652,007,087.39
  5. Step 5: Solve for x
    x = 541,652,007,087.39/866,369.40
  6. Step 6: Final answer
    x = 625,197.53

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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.