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Finding the Fourth Proportional to 71,696.20, 107,414.70 and 61,328.20

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Solution

The fourth proportional to 71,696.20, 107,414.70 and 61,328.20 is: 91,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,696.20 : 107,414.70 = 61,328.20 : x
  2. Step 2: Convert to fraction form
    71,696.20/107,414.70 = 61,328.20/x
  3. Step 3: Cross multiply
    71,696.20x = 107,414.70 × 61,328.20
  4. Step 4: Simplify right side
    71,696.20x = 6,587,550,204.54
  5. Step 5: Solve for x
    x = 6,587,550,204.54/71,696.20
  6. Step 6: Final answer
    x = 91,881.44

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1.5x scale

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.