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Finding the Fourth Proportional to 73,115.40, 109,683.90 and 23,200.20

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Solution

The fourth proportional to 73,115.40, 109,683.90 and 23,200.20 is: 34,803.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,115.40 : 109,683.90 = 23,200.20 : x
  2. Step 2: Convert to fraction form
    73,115.40/109,683.90 = 23,200.20/x
  3. Step 3: Cross multiply
    73,115.40x = 109,683.90 × 23,200.20
  4. Step 4: Simplify right side
    73,115.40x = 2,544,688,416.78
  5. Step 5: Solve for x
    x = 2,544,688,416.78/73,115.40
  6. Step 6: Final answer
    x = 34,803.73

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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.