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Finding the Fourth Proportional to 44,921.61, 67,382.61 and 11,639.31

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Solution

The fourth proportional to 44,921.61, 67,382.61 and 11,639.31 is: 17,459.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,921.61 : 67,382.61 = 11,639.31 : x
  2. Step 2: Convert to fraction form
    44,921.61/67,382.61 = 11,639.31/x
  3. Step 3: Cross multiply
    44,921.61x = 67,382.61 × 11,639.31
  4. Step 4: Simplify right side
    44,921.61x = 784,287,086.40
  5. Step 5: Solve for x
    x = 784,287,086.40/44,921.61
  6. Step 6: Final answer
    x = 17,459.02

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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.