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Finding the Fourth Proportional to 58,311.82, 87,469.08 and 20,874.46

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Solution

The fourth proportional to 58,311.82, 87,469.08 and 20,874.46 is: 31,312.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,311.82 : 87,469.08 = 20,874.46 : x
  2. Step 2: Convert to fraction form
    58,311.82/87,469.08 = 20,874.46/x
  3. Step 3: Cross multiply
    58,311.82x = 87,469.08 × 20,874.46
  4. Step 4: Simplify right side
    58,311.82x = 1,825,869,811.70
  5. Step 5: Solve for x
    x = 1,825,869,811.70/58,311.82
  6. Step 6: Final answer
    x = 31,312.17

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1.5x scale

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.