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Finding the Fourth Proportional to 318,126.10, 476,839.22 and 131,035.54

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Solution

The fourth proportional to 318,126.10, 476,839.22 and 131,035.54 is: 196,409.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,126.10 : 476,839.22 = 131,035.54 : x
  2. Step 2: Convert to fraction form
    318,126.10/476,839.22 = 131,035.54/x
  3. Step 3: Cross multiply
    318,126.10x = 476,839.22 × 131,035.54
  4. Step 4: Simplify right side
    318,126.10x = 62,482,884,685.88
  5. Step 5: Solve for x
    x = 62,482,884,685.88/318,126.10
  6. Step 6: Final answer
    x = 196,409.17

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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.