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Finding the Fourth Proportional to 188,407.76, 259,938.40 and 116,761.64

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Solution

The fourth proportional to 188,407.76, 259,938.40 and 116,761.64 is: 161,091.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,407.76 : 259,938.40 = 116,761.64 : x
  2. Step 2: Convert to fraction form
    188,407.76/259,938.40 = 116,761.64/x
  3. Step 3: Cross multiply
    188,407.76x = 259,938.40 × 116,761.64
  4. Step 4: Simplify right side
    188,407.76x = 30,350,833,882.98
  5. Step 5: Solve for x
    x = 30,350,833,882.98/188,407.76
  6. Step 6: Final answer
    x = 161,091.21

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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.