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Finding the Fourth Proportional to 108,586.80, 162,822.60 and 38,468.40

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Solution

The fourth proportional to 108,586.80, 162,822.60 and 38,468.40 is: 57,682.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,586.80 : 162,822.60 = 38,468.40 : x
  2. Step 2: Convert to fraction form
    108,586.80/162,822.60 = 38,468.40/x
  3. Step 3: Cross multiply
    108,586.80x = 162,822.60 × 38,468.40
  4. Step 4: Simplify right side
    108,586.80x = 6,263,524,905.84
  5. Step 5: Solve for x
    x = 6,263,524,905.84/108,586.80
  6. Step 6: Final answer
    x = 57,682.19

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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.