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Finding the Fourth Proportional to 805,840.40, 1,209,149.40 and 568,672.40

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Solution

The fourth proportional to 805,840.40, 1,209,149.40 and 568,672.40 is: 853,282.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,840.40 : 1,209,149.40 = 568,672.40 : x
  2. Step 2: Convert to fraction form
    805,840.40/1,209,149.40 = 568,672.40/x
  3. Step 3: Cross multiply
    805,840.40x = 1,209,149.40 × 568,672.40
  4. Step 4: Simplify right side
    805,840.40x = 687,609,891,256.56
  5. Step 5: Solve for x
    x = 687,609,891,256.56/805,840.40
  6. Step 6: Final answer
    x = 853,282.97

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1.5x scale

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.