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Finding the Fourth Proportional to 62,489.70, 93,734.55 and 20,936.70

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Solution

The fourth proportional to 62,489.70, 93,734.55 and 20,936.70 is: 31,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,489.70 : 93,734.55 = 20,936.70 : x
  2. Step 2: Convert to fraction form
    62,489.70/93,734.55 = 20,936.70/x
  3. Step 3: Cross multiply
    62,489.70x = 93,734.55 × 20,936.70
  4. Step 4: Simplify right side
    62,489.70x = 1,962,492,152.99
  5. Step 5: Solve for x
    x = 1,962,492,152.99/62,489.70
  6. Step 6: Final answer
    x = 31,405.05

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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.