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Finding the Fourth Proportional to 56,856.88, 85,337.84 and 28,796.66

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Solution

The fourth proportional to 56,856.88, 85,337.84 and 28,796.66 is: 43,221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,856.88 : 85,337.84 = 28,796.66 : x
  2. Step 2: Convert to fraction form
    56,856.88/85,337.84 = 28,796.66/x
  3. Step 3: Cross multiply
    56,856.88x = 85,337.84 × 28,796.66
  4. Step 4: Simplify right side
    56,856.88x = 2,457,444,408.92
  5. Step 5: Solve for x
    x = 2,457,444,408.92/56,856.88
  6. Step 6: Final answer
    x = 43,221.59

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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.