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Finding the Fourth Proportional to 997,561.66, 1,373,735.64 and 866,678.80

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Solution

The fourth proportional to 997,561.66, 1,373,735.64 and 866,678.80 is: 1,193,497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,561.66 : 1,373,735.64 = 866,678.80 : x
  2. Step 2: Convert to fraction form
    997,561.66/1,373,735.64 = 866,678.80/x
  3. Step 3: Cross multiply
    997,561.66x = 1,373,735.64 × 866,678.80
  4. Step 4: Simplify right side
    997,561.66x = 1,190,587,555,992.43
  5. Step 5: Solve for x
    x = 1,190,587,555,992.43/997,561.66
  6. Step 6: Final answer
    x = 1,193,497.71

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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.