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Finding the Fourth Proportional to 628,003.13, 866,636.16 and 341,517.07

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Solution

The fourth proportional to 628,003.13, 866,636.16 and 341,517.07 is: 471,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,003.13 : 866,636.16 = 341,517.07 : x
  2. Step 2: Convert to fraction form
    628,003.13/866,636.16 = 341,517.07/x
  3. Step 3: Cross multiply
    628,003.13x = 866,636.16 × 341,517.07
  4. Step 4: Simplify right side
    628,003.13x = 295,971,037,786.07
  5. Step 5: Solve for x
    x = 295,971,037,786.07/628,003.13
  6. Step 6: Final answer
    x = 471,289.11

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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.