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Finding the Fourth Proportional to 331,062.56, 456,856.80 and 187,835.84

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Solution

The fourth proportional to 331,062.56, 456,856.80 and 187,835.84 is: 259,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,062.56 : 456,856.80 = 187,835.84 : x
  2. Step 2: Convert to fraction form
    331,062.56/456,856.80 = 187,835.84/x
  3. Step 3: Cross multiply
    331,062.56x = 456,856.80 × 187,835.84
  4. Step 4: Simplify right side
    331,062.56x = 85,814,080,787.71
  5. Step 5: Solve for x
    x = 85,814,080,787.71/331,062.56
  6. Step 6: Final answer
    x = 259,208.05

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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.