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Finding the Fourth Proportional to 403,731.10, 605,596.65 and 254,431.90

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Solution

The fourth proportional to 403,731.10, 605,596.65 and 254,431.90 is: 381,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,731.10 : 605,596.65 = 254,431.90 : x
  2. Step 2: Convert to fraction form
    403,731.10/605,596.65 = 254,431.90/x
  3. Step 3: Cross multiply
    403,731.10x = 605,596.65 × 254,431.90
  4. Step 4: Simplify right side
    403,731.10x = 154,083,106,293.14
  5. Step 5: Solve for x
    x = 154,083,106,293.14/403,731.10
  6. Step 6: Final answer
    x = 381,647.85

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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.