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Finding the Fourth Proportional to 436,797.47, 655,199.85 and 121,278.98

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Solution

The fourth proportional to 436,797.47, 655,199.85 and 121,278.98 is: 181,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,797.47 : 655,199.85 = 121,278.98 : x
  2. Step 2: Convert to fraction form
    436,797.47/655,199.85 = 121,278.98/x
  3. Step 3: Cross multiply
    436,797.47x = 655,199.85 × 121,278.98
  4. Step 4: Simplify right side
    436,797.47x = 79,461,969,504.15
  5. Step 5: Solve for x
    x = 79,461,969,504.15/436,797.47
  6. Step 6: Final answer
    x = 181,919.48

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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.