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Finding the Fourth Proportional to 117,853.80, 176,586.30 and 100,357.80

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Solution

The fourth proportional to 117,853.80, 176,586.30 and 100,357.80 is: 150,371.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,853.80 : 176,586.30 = 100,357.80 : x
  2. Step 2: Convert to fraction form
    117,853.80/176,586.30 = 100,357.80/x
  3. Step 3: Cross multiply
    117,853.80x = 176,586.30 × 100,357.80
  4. Step 4: Simplify right side
    117,853.80x = 17,721,812,578.14
  5. Step 5: Solve for x
    x = 17,721,812,578.14/117,853.80
  6. Step 6: Final answer
    x = 150,371.16

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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.