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Finding the Fourth Proportional to 117,112.80, 175,784.40 and 58,015.20

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Solution

The fourth proportional to 117,112.80, 175,784.40 and 58,015.20 is: 87,079.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,112.80 : 175,784.40 = 58,015.20 : x
  2. Step 2: Convert to fraction form
    117,112.80/175,784.40 = 58,015.20/x
  3. Step 3: Cross multiply
    117,112.80x = 175,784.40 × 58,015.20
  4. Step 4: Simplify right side
    117,112.80x = 10,198,167,122.88
  5. Step 5: Solve for x
    x = 10,198,167,122.88/117,112.80
  6. Step 6: Final answer
    x = 87,079.87

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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.