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Finding the Fourth Proportional to 117,015.40, 175,621.56 and 109,634.27

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Solution

The fourth proportional to 117,015.40, 175,621.56 and 109,634.27 is: 164,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,015.40 : 175,621.56 = 109,634.27 : x
  2. Step 2: Convert to fraction form
    117,015.40/175,621.56 = 109,634.27/x
  3. Step 3: Cross multiply
    117,015.40x = 175,621.56 × 109,634.27
  4. Step 4: Simplify right side
    117,015.40x = 19,254,141,965.92
  5. Step 5: Solve for x
    x = 19,254,141,965.92/117,015.40
  6. Step 6: Final answer
    x = 164,543.66

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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.