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Finding the Fourth Proportional to 117,138.39, 175,718.39 and 38,253.03

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Solution

The fourth proportional to 117,138.39, 175,718.39 and 38,253.03 is: 57,383.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,138.39 : 175,718.39 = 38,253.03 : x
  2. Step 2: Convert to fraction form
    117,138.39/175,718.39 = 38,253.03/x
  3. Step 3: Cross multiply
    117,138.39x = 175,718.39 × 38,253.03
  4. Step 4: Simplify right side
    117,138.39x = 6,721,760,652.96
  5. Step 5: Solve for x
    x = 6,721,760,652.96/117,138.39
  6. Step 6: Final answer
    x = 57,383.07

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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.