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Finding the Fourth Proportional to 100,593.87, 138,820.56 and 55,271.13

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Solution

The fourth proportional to 100,593.87, 138,820.56 and 55,271.13 is: 76,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,593.87 : 138,820.56 = 55,271.13 : x
  2. Step 2: Convert to fraction form
    100,593.87/138,820.56 = 55,271.13/x
  3. Step 3: Cross multiply
    100,593.87x = 138,820.56 × 55,271.13
  4. Step 4: Simplify right side
    100,593.87x = 7,672,769,218.43
  5. Step 5: Solve for x
    x = 7,672,769,218.43/100,593.87
  6. Step 6: Final answer
    x = 76,274.72

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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.