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Finding the Fourth Proportional to 140,803.08, 194,311.08 and 87,087.12

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Solution

The fourth proportional to 140,803.08, 194,311.08 and 87,087.12 is: 120,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,803.08 : 194,311.08 = 87,087.12 : x
  2. Step 2: Convert to fraction form
    140,803.08/194,311.08 = 87,087.12/x
  3. Step 3: Cross multiply
    140,803.08x = 194,311.08 × 87,087.12
  4. Step 4: Simplify right side
    140,803.08x = 16,921,992,341.29
  5. Step 5: Solve for x
    x = 16,921,992,341.29/140,803.08
  6. Step 6: Final answer
    x = 120,181.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.