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Finding the Fourth Proportional to 403,871.54, 557,437.70 and 251,025.17

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Solution

The fourth proportional to 403,871.54, 557,437.70 and 251,025.17 is: 346,473.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,871.54 : 557,437.70 = 251,025.17 : x
  2. Step 2: Convert to fraction form
    403,871.54/557,437.70 = 251,025.17/x
  3. Step 3: Cross multiply
    403,871.54x = 557,437.70 × 251,025.17
  4. Step 4: Simplify right side
    403,871.54x = 139,930,889,835.27
  5. Step 5: Solve for x
    x = 139,930,889,835.27/403,871.54
  6. Step 6: Final answer
    x = 346,473.76

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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.