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Finding the Fourth Proportional to 48,371.98, 72,585.99 and 20,289.53

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Solution

The fourth proportional to 48,371.98, 72,585.99 and 20,289.53 is: 30,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,371.98 : 72,585.99 = 20,289.53 : x
  2. Step 2: Convert to fraction form
    48,371.98/72,585.99 = 20,289.53/x
  3. Step 3: Cross multiply
    48,371.98x = 72,585.99 × 20,289.53
  4. Step 4: Simplify right side
    48,371.98x = 1,472,735,621.68
  5. Step 5: Solve for x
    x = 1,472,735,621.68/48,371.98
  6. Step 6: Final answer
    x = 30,446.05

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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.