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Finding the Fourth Proportional to 57,964.40, 87,052.20 and 34,636.40

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Solution

The fourth proportional to 57,964.40, 87,052.20 and 34,636.40 is: 52,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,964.40 : 87,052.20 = 34,636.40 : x
  2. Step 2: Convert to fraction form
    57,964.40/87,052.20 = 34,636.40/x
  3. Step 3: Cross multiply
    57,964.40x = 87,052.20 × 34,636.40
  4. Step 4: Simplify right side
    57,964.40x = 3,015,174,820.08
  5. Step 5: Solve for x
    x = 3,015,174,820.08/57,964.40
  6. Step 6: Final answer
    x = 52,017.70

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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.