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Finding the Fourth Proportional to 866,445.71, 1,299,672.21 and 568,809.59

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Solution

The fourth proportional to 866,445.71, 1,299,672.21 and 568,809.59 is: 853,216.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,445.71 : 1,299,672.21 = 568,809.59 : x
  2. Step 2: Convert to fraction form
    866,445.71/1,299,672.21 = 568,809.59/x
  3. Step 3: Cross multiply
    866,445.71x = 1,299,672.21 × 568,809.59
  4. Step 4: Simplify right side
    866,445.71x = 739,266,016,904.49
  5. Step 5: Solve for x
    x = 739,266,016,904.49/866,445.71
  6. Step 6: Final answer
    x = 853,216.78

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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.