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Finding the Fourth Proportional to 100,924.50, 139,270.28 and 55,593.60

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Solution

The fourth proportional to 100,924.50, 139,270.28 and 55,593.60 is: 76,716.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,924.50 : 139,270.28 = 55,593.60 : x
  2. Step 2: Convert to fraction form
    100,924.50/139,270.28 = 55,593.60/x
  3. Step 3: Cross multiply
    100,924.50x = 139,270.28 × 55,593.60
  4. Step 4: Simplify right side
    100,924.50x = 7,742,536,238.21
  5. Step 5: Solve for x
    x = 7,742,536,238.21/100,924.50
  6. Step 6: Final answer
    x = 76,716.12

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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.