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Finding the Fourth Proportional to 104,662.13, 144,427.05 and 58,719.20

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Solution

The fourth proportional to 104,662.13, 144,427.05 and 58,719.20 is: 81,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,662.13 : 144,427.05 = 58,719.20 : x
  2. Step 2: Convert to fraction form
    104,662.13/144,427.05 = 58,719.20/x
  3. Step 3: Cross multiply
    104,662.13x = 144,427.05 × 58,719.20
  4. Step 4: Simplify right side
    104,662.13x = 8,480,640,112.22
  5. Step 5: Solve for x
    x = 8,480,640,112.22/104,662.13
  6. Step 6: Final answer
    x = 81,028.74

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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.