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Finding the Fourth Proportional to 117,480.44, 175,998.71 and 91,055.81

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Solution

The fourth proportional to 117,480.44, 175,998.71 and 91,055.81 is: 136,411.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,480.44 : 175,998.71 = 91,055.81 : x
  2. Step 2: Convert to fraction form
    117,480.44/175,998.71 = 91,055.81/x
  3. Step 3: Cross multiply
    117,480.44x = 175,998.71 × 91,055.81
  4. Step 4: Simplify right side
    117,480.44x = 16,025,705,098.01
  5. Step 5: Solve for x
    x = 16,025,705,098.01/117,480.44
  6. Step 6: Final answer
    x = 136,411.69

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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.