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Finding the Fourth Proportional to 366,990.40, 550,353.43 and 127,039.11

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Solution

The fourth proportional to 366,990.40, 550,353.43 and 127,039.11 is: 190,512.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,990.40 : 550,353.43 = 127,039.11 : x
  2. Step 2: Convert to fraction form
    366,990.40/550,353.43 = 127,039.11/x
  3. Step 3: Cross multiply
    366,990.40x = 550,353.43 × 127,039.11
  4. Step 4: Simplify right side
    366,990.40x = 69,916,409,932.65
  5. Step 5: Solve for x
    x = 69,916,409,932.65/366,990.40
  6. Step 6: Final answer
    x = 190,512.91

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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.