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Finding the Fourth Proportional to 403,927.90, 605,891.85 and 341,719.90

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Solution

The fourth proportional to 403,927.90, 605,891.85 and 341,719.90 is: 512,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,927.90 : 605,891.85 = 341,719.90 : x
  2. Step 2: Convert to fraction form
    403,927.90/605,891.85 = 341,719.90/x
  3. Step 3: Cross multiply
    403,927.90x = 605,891.85 × 341,719.90
  4. Step 4: Simplify right side
    403,927.90x = 207,045,302,392.82
  5. Step 5: Solve for x
    x = 207,045,302,392.82/403,927.90
  6. Step 6: Final answer
    x = 512,579.85

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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.