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Finding the Fourth Proportional to 20,615.67, 30,925.53 and 5,824.70

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Solution

The fourth proportional to 20,615.67, 30,925.53 and 5,824.70 is: 8,737.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.67 : 30,925.53 = 5,824.70 : x
  2. Step 2: Convert to fraction form
    20,615.67/30,925.53 = 5,824.70/x
  3. Step 3: Cross multiply
    20,615.67x = 30,925.53 × 5,824.70
  4. Step 4: Simplify right side
    20,615.67x = 180,132,011.90
  5. Step 5: Solve for x
    x = 180,132,011.90/20,615.67
  6. Step 6: Final answer
    x = 8,737.63

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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.