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Finding the Fourth Proportional to 188,428.60, 259,967.16 and 116,782.48

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Solution

The fourth proportional to 188,428.60, 259,967.16 and 116,782.48 is: 161,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,428.60 : 259,967.16 = 116,782.48 : x
  2. Step 2: Convert to fraction form
    188,428.60/259,967.16 = 116,782.48/x
  3. Step 3: Cross multiply
    188,428.60x = 259,967.16 × 116,782.48
  4. Step 4: Simplify right side
    188,428.60x = 30,359,609,663.36
  5. Step 5: Solve for x
    x = 30,359,609,663.36/188,428.60
  6. Step 6: Final answer
    x = 161,119.97

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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.