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Finding the Fourth Proportional to 101,243.48, 139,715.48 and 55,924.60

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Solution

The fourth proportional to 101,243.48, 139,715.48 and 55,924.60 is: 77,175.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,243.48 : 139,715.48 = 55,924.60 : x
  2. Step 2: Convert to fraction form
    101,243.48/139,715.48 = 55,924.60/x
  3. Step 3: Cross multiply
    101,243.48x = 139,715.48 × 55,924.60
  4. Step 4: Simplify right side
    101,243.48x = 7,813,532,332.81
  5. Step 5: Solve for x
    x = 7,813,532,332.81/101,243.48
  6. Step 6: Final answer
    x = 77,175.66

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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.