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Finding the Fourth Proportional to 61,813.20, 92,719.80 and 33,722.40

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Solution

The fourth proportional to 61,813.20, 92,719.80 and 33,722.40 is: 50,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,813.20 : 92,719.80 = 33,722.40 : x
  2. Step 2: Convert to fraction form
    61,813.20/92,719.80 = 33,722.40/x
  3. Step 3: Cross multiply
    61,813.20x = 92,719.80 × 33,722.40
  4. Step 4: Simplify right side
    61,813.20x = 3,126,734,183.52
  5. Step 5: Solve for x
    x = 3,126,734,183.52/61,813.20
  6. Step 6: Final answer
    x = 50,583.60

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Similar ratio
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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.