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Finding the Fourth Proportional to 79,890, 110,248.20 and 44,562

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Solution

The fourth proportional to 79,890, 110,248.20 and 44,562 is: 61,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,890 : 110,248.20 = 44,562 : x
  2. Step 2: Convert to fraction form
    79,890/110,248.20 = 44,562/x
  3. Step 3: Cross multiply
    79,890x = 110,248.20 × 44,562
  4. Step 4: Simplify right side
    79,890x = 4,912,880,288.40
  5. Step 5: Solve for x
    x = 4,912,880,288.40/79,890
  6. Step 6: Final answer
    x = 61,495.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.