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Finding the Fourth Proportional to 552,090.44, 761,789.82 and 310,339.46

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Solution

The fourth proportional to 552,090.44, 761,789.82 and 310,339.46 is: 428,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,090.44 : 761,789.82 = 310,339.46 : x
  2. Step 2: Convert to fraction form
    552,090.44/761,789.82 = 310,339.46/x
  3. Step 3: Cross multiply
    552,090.44x = 761,789.82 × 310,339.46
  4. Step 4: Simplify right side
    552,090.44x = 236,413,441,372.30
  5. Step 5: Solve for x
    x = 236,413,441,372.30/552,090.44
  6. Step 6: Final answer
    x = 428,215.06

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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.