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Finding the Fourth Proportional to 45,963.71, 68,881.77 and 20,942.60

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Solution

The fourth proportional to 45,963.71, 68,881.77 and 20,942.60 is: 31,384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,963.71 : 68,881.77 = 20,942.60 : x
  2. Step 2: Convert to fraction form
    45,963.71/68,881.77 = 20,942.60/x
  3. Step 3: Cross multiply
    45,963.71x = 68,881.77 × 20,942.60
  4. Step 4: Simplify right side
    45,963.71x = 1,442,563,528.61
  5. Step 5: Solve for x
    x = 1,442,563,528.61/45,963.71
  6. Step 6: Final answer
    x = 31,384.84

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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.