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Finding the Fourth Proportional to 28,891.60, 43,356.60 and 16,411.60

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Solution

The fourth proportional to 28,891.60, 43,356.60 and 16,411.60 is: 24,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.60 : 43,356.60 = 16,411.60 : x
  2. Step 2: Convert to fraction form
    28,891.60/43,356.60 = 16,411.60/x
  3. Step 3: Cross multiply
    28,891.60x = 43,356.60 × 16,411.60
  4. Step 4: Simplify right side
    28,891.60x = 711,551,176.56
  5. Step 5: Solve for x
    x = 711,551,176.56/28,891.60
  6. Step 6: Final answer
    x = 24,628.31

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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.