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Finding the Fourth Proportional to 40,411.80, 60,620.74 and 10,828.98

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Solution

The fourth proportional to 40,411.80, 60,620.74 and 10,828.98 is: 16,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,411.80 : 60,620.74 = 10,828.98 : x
  2. Step 2: Convert to fraction form
    40,411.80/60,620.74 = 10,828.98/x
  3. Step 3: Cross multiply
    40,411.80x = 60,620.74 × 10,828.98
  4. Step 4: Simplify right side
    40,411.80x = 656,460,753.97
  5. Step 5: Solve for x
    x = 656,460,753.97/40,411.80
  6. Step 6: Final answer
    x = 16,244.28

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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.