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Finding the Fourth Proportional to 157,274.43, 235,678.31 and 115,517.31

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Solution

The fourth proportional to 157,274.43, 235,678.31 and 115,517.31 is: 173,104.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,274.43 : 235,678.31 = 115,517.31 : x
  2. Step 2: Convert to fraction form
    157,274.43/235,678.31 = 115,517.31/x
  3. Step 3: Cross multiply
    157,274.43x = 235,678.31 × 115,517.31
  4. Step 4: Simplify right side
    157,274.43x = 27,224,923,368.36
  5. Step 5: Solve for x
    x = 27,224,923,368.36/157,274.43
  6. Step 6: Final answer
    x = 173,104.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.