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Finding the Fourth Proportional to 92,543.40, 138,815.10 and 33,388.20

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Solution

The fourth proportional to 92,543.40, 138,815.10 and 33,388.20 is: 50,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,543.40 : 138,815.10 = 33,388.20 : x
  2. Step 2: Convert to fraction form
    92,543.40/138,815.10 = 33,388.20/x
  3. Step 3: Cross multiply
    92,543.40x = 138,815.10 × 33,388.20
  4. Step 4: Simplify right side
    92,543.40x = 4,634,786,321.82
  5. Step 5: Solve for x
    x = 4,634,786,321.82/92,543.40
  6. Step 6: Final answer
    x = 50,082.30

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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.