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Finding the Fourth Proportional to 117,478.65, 175,996.04 and 91,054.02

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Solution

The fourth proportional to 117,478.65, 175,996.04 and 91,054.02 is: 136,409.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.65 : 175,996.04 = 91,054.02 : x
  2. Step 2: Convert to fraction form
    117,478.65/175,996.04 = 91,054.02/x
  3. Step 3: Cross multiply
    117,478.65x = 175,996.04 × 91,054.02
  4. Step 4: Simplify right side
    117,478.65x = 16,025,147,662.97
  5. Step 5: Solve for x
    x = 16,025,147,662.97/117,478.65
  6. Step 6: Final answer
    x = 136,409.02

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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.