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Finding the Fourth Proportional to 57,721.79, 79,655.30 and 32,228.55

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Solution

The fourth proportional to 57,721.79, 79,655.30 and 32,228.55 is: 44,474.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.79 : 79,655.30 = 32,228.55 : x
  2. Step 2: Convert to fraction form
    57,721.79/79,655.30 = 32,228.55/x
  3. Step 3: Cross multiply
    57,721.79x = 79,655.30 × 32,228.55
  4. Step 4: Simplify right side
    57,721.79x = 2,567,174,657.67
  5. Step 5: Solve for x
    x = 2,567,174,657.67/57,721.79
  6. Step 6: Final answer
    x = 44,474.96

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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.