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Finding the Fourth Proportional to 112,229.50, 154,876.71 and 61,928.50

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Solution

The fourth proportional to 112,229.50, 154,876.71 and 61,928.50 is: 85,461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,229.50 : 154,876.71 = 61,928.50 : x
  2. Step 2: Convert to fraction form
    112,229.50/154,876.71 = 61,928.50/x
  3. Step 3: Cross multiply
    112,229.50x = 154,876.71 × 61,928.50
  4. Step 4: Simplify right side
    112,229.50x = 9,591,282,335.24
  5. Step 5: Solve for x
    x = 9,591,282,335.24/112,229.50
  6. Step 6: Final answer
    x = 85,461.33

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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.