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Finding the Fourth Proportional to 34,871.60, 48,126.84 and 20,724.32

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Solution

The fourth proportional to 34,871.60, 48,126.84 and 20,724.32 is: 28,601.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,871.60 : 48,126.84 = 20,724.32 : x
  2. Step 2: Convert to fraction form
    34,871.60/48,126.84 = 20,724.32/x
  3. Step 3: Cross multiply
    34,871.60x = 48,126.84 × 20,724.32
  4. Step 4: Simplify right side
    34,871.60x = 997,396,032.75
  5. Step 5: Solve for x
    x = 997,396,032.75/34,871.60
  6. Step 6: Final answer
    x = 28,601.96

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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.