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Finding the Fourth Proportional to 117,479.41, 175,997.17 and 91,054.78

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Solution

The fourth proportional to 117,479.41, 175,997.17 and 91,054.78 is: 136,410.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,479.41 : 175,997.17 = 91,054.78 : x
  2. Step 2: Convert to fraction form
    117,479.41/175,997.17 = 91,054.78/x
  3. Step 3: Cross multiply
    117,479.41x = 175,997.17 × 91,054.78
  4. Step 4: Simplify right side
    117,479.41x = 16,025,382,927.34
  5. Step 5: Solve for x
    x = 16,025,382,927.34/117,479.41
  6. Step 6: Final answer
    x = 136,410.14

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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.