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Finding the Fourth Proportional to 109,015.32, 150,441.74 and 63,695.96

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Solution

The fourth proportional to 109,015.32, 150,441.74 and 63,695.96 is: 87,900.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,015.32 : 150,441.74 = 63,695.96 : x
  2. Step 2: Convert to fraction form
    109,015.32/150,441.74 = 63,695.96/x
  3. Step 3: Cross multiply
    109,015.32x = 150,441.74 × 63,695.96
  4. Step 4: Simplify right side
    109,015.32x = 9,582,531,053.37
  5. Step 5: Solve for x
    x = 9,582,531,053.37/109,015.32
  6. Step 6: Final answer
    x = 87,900.77

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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.