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Finding the Fourth Proportional to 401,181.88, 553,687.70 and 248,269.32

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Solution

The fourth proportional to 401,181.88, 553,687.70 and 248,269.32 is: 342,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,181.88 : 553,687.70 = 248,269.32 : x
  2. Step 2: Convert to fraction form
    401,181.88/553,687.70 = 248,269.32/x
  3. Step 3: Cross multiply
    401,181.88x = 553,687.70 × 248,269.32
  4. Step 4: Simplify right side
    401,181.88x = 137,463,667,530.02
  5. Step 5: Solve for x
    x = 137,463,667,530.02/401,181.88
  6. Step 6: Final answer
    x = 342,646.75

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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.