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Finding the Fourth Proportional to 101,194.92, 139,645.19 and 55,871.91

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Solution

The fourth proportional to 101,194.92, 139,645.19 and 55,871.91 is: 77,101.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,194.92 : 139,645.19 = 55,871.91 : x
  2. Step 2: Convert to fraction form
    101,194.92/139,645.19 = 55,871.91/x
  3. Step 3: Cross multiply
    101,194.92x = 139,645.19 × 55,871.91
  4. Step 4: Simplify right side
    101,194.92x = 7,802,243,627.29
  5. Step 5: Solve for x
    x = 7,802,243,627.29/101,194.92
  6. Step 6: Final answer
    x = 77,101.14

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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.