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Finding the Fourth Proportional to 104,988.54, 144,884.82 and 57,242.68

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Solution

The fourth proportional to 104,988.54, 144,884.82 and 57,242.68 is: 78,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,988.54 : 144,884.82 = 57,242.68 : x
  2. Step 2: Convert to fraction form
    104,988.54/144,884.82 = 57,242.68/x
  3. Step 3: Cross multiply
    104,988.54x = 144,884.82 × 57,242.68
  4. Step 4: Simplify right side
    104,988.54x = 8,293,595,388.12
  5. Step 5: Solve for x
    x = 8,293,595,388.12/104,988.54
  6. Step 6: Final answer
    x = 78,995.24

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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.