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Finding the Fourth Proportional to 62,287.70, 93,431.50 and 20,734.70

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Solution

The fourth proportional to 62,287.70, 93,431.50 and 20,734.70 is: 31,102.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,287.70 : 93,431.50 = 20,734.70 : x
  2. Step 2: Convert to fraction form
    62,287.70/93,431.50 = 20,734.70/x
  3. Step 3: Cross multiply
    62,287.70x = 93,431.50 × 20,734.70
  4. Step 4: Simplify right side
    62,287.70x = 1,937,274,123.05
  5. Step 5: Solve for x
    x = 1,937,274,123.05/62,287.70
  6. Step 6: Final answer
    x = 31,102.03

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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.