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Finding the Fourth Proportional to 804,197.43, 1,109,515.03 and 513,978.87

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Solution

The fourth proportional to 804,197.43, 1,109,515.03 and 513,978.87 is: 709,113.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,197.43 : 1,109,515.03 = 513,978.87 : x
  2. Step 2: Convert to fraction form
    804,197.43/1,109,515.03 = 513,978.87/x
  3. Step 3: Cross multiply
    804,197.43x = 1,109,515.03 × 513,978.87
  4. Step 4: Simplify right side
    804,197.43x = 570,267,281,367.42
  5. Step 5: Solve for x
    x = 570,267,281,367.42/804,197.43
  6. Step 6: Final answer
    x = 709,113.53

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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.