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Finding the Fourth Proportional to 92,639.70, 138,959.55 and 33,477.30

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Solution

The fourth proportional to 92,639.70, 138,959.55 and 33,477.30 is: 50,215.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,639.70 : 138,959.55 = 33,477.30 : x
  2. Step 2: Convert to fraction form
    92,639.70/138,959.55 = 33,477.30/x
  3. Step 3: Cross multiply
    92,639.70x = 138,959.55 × 33,477.30
  4. Step 4: Simplify right side
    92,639.70x = 4,651,990,543.22
  5. Step 5: Solve for x
    x = 4,651,990,543.22/92,639.70
  6. Step 6: Final answer
    x = 50,215.95

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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.