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Finding the Fourth Proportional to 92,685.40, 139,028.10 and 33,530.20

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Solution

The fourth proportional to 92,685.40, 139,028.10 and 33,530.20 is: 50,295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,685.40 : 139,028.10 = 33,530.20 : x
  2. Step 2: Convert to fraction form
    92,685.40/139,028.10 = 33,530.20/x
  3. Step 3: Cross multiply
    92,685.40x = 139,028.10 × 33,530.20
  4. Step 4: Simplify right side
    92,685.40x = 4,661,639,998.62
  5. Step 5: Solve for x
    x = 4,661,639,998.62/92,685.40
  6. Step 6: Final answer
    x = 50,295.30

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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.