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Finding the Fourth Proportional to 112,503.81, 168,755.88 and 45,943.94

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Solution

The fourth proportional to 112,503.81, 168,755.88 and 45,943.94 is: 68,915.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,503.81 : 168,755.88 = 45,943.94 : x
  2. Step 2: Convert to fraction form
    112,503.81/168,755.88 = 45,943.94/x
  3. Step 3: Cross multiply
    112,503.81x = 168,755.88 × 45,943.94
  4. Step 4: Simplify right side
    112,503.81x = 7,753,309,756.99
  5. Step 5: Solve for x
    x = 7,753,309,756.99/112,503.81
  6. Step 6: Final answer
    x = 68,915.97

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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.