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Finding the Fourth Proportional to 100,927.32, 139,282.92 and 55,606.20

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Solution

The fourth proportional to 100,927.32, 139,282.92 and 55,606.20 is: 76,738.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,927.32 : 139,282.92 = 55,606.20 : x
  2. Step 2: Convert to fraction form
    100,927.32/139,282.92 = 55,606.20/x
  3. Step 3: Cross multiply
    100,927.32x = 139,282.92 × 55,606.20
  4. Step 4: Simplify right side
    100,927.32x = 7,744,993,906.10
  5. Step 5: Solve for x
    x = 7,744,993,906.10/100,927.32
  6. Step 6: Final answer
    x = 76,738.33

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