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Finding the Fourth Proportional to 101,519.64, 139,846.68 and 86,363.73

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Solution

The fourth proportional to 101,519.64, 139,846.68 and 86,363.73 is: 118,968.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,519.64 : 139,846.68 = 86,363.73 : x
  2. Step 2: Convert to fraction form
    101,519.64/139,846.68 = 86,363.73/x
  3. Step 3: Cross multiply
    101,519.64x = 139,846.68 × 86,363.73
  4. Step 4: Simplify right side
    101,519.64x = 12,077,680,912.92
  5. Step 5: Solve for x
    x = 12,077,680,912.92/101,519.64
  6. Step 6: Final answer
    x = 118,968.91

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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.