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Finding the Fourth Proportional to 139,141.92, 208,712.16 and 33,961.44

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Solution

The fourth proportional to 139,141.92, 208,712.16 and 33,961.44 is: 50,941.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,141.92 : 208,712.16 = 33,961.44 : x
  2. Step 2: Convert to fraction form
    139,141.92/208,712.16 = 33,961.44/x
  3. Step 3: Cross multiply
    139,141.92x = 208,712.16 × 33,961.44
  4. Step 4: Simplify right side
    139,141.92x = 7,088,165,499.11
  5. Step 5: Solve for x
    x = 7,088,165,499.11/139,141.92
  6. Step 6: Final answer
    x = 50,941.98

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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.