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Finding the Fourth Proportional to 48,166.40, 72,422.40 and 40,563.20

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Solution

The fourth proportional to 48,166.40, 72,422.40 and 40,563.20 is: 60,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,166.40 : 72,422.40 = 40,563.20 : x
  2. Step 2: Convert to fraction form
    48,166.40/72,422.40 = 40,563.20/x
  3. Step 3: Cross multiply
    48,166.40x = 72,422.40 × 40,563.20
  4. Step 4: Simplify right side
    48,166.40x = 2,937,684,295.68
  5. Step 5: Solve for x
    x = 2,937,684,295.68/48,166.40
  6. Step 6: Final answer
    x = 60,990.32

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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.