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Finding the Fourth Proportional to 187,763.92, 281,615.16 and 69,491.28

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Solution

The fourth proportional to 187,763.92, 281,615.16 and 69,491.28 is: 104,225.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,763.92 : 281,615.16 = 69,491.28 : x
  2. Step 2: Convert to fraction form
    187,763.92/281,615.16 = 69,491.28/x
  3. Step 3: Cross multiply
    187,763.92x = 281,615.16 × 69,491.28
  4. Step 4: Simplify right side
    187,763.92x = 19,569,797,935.80
  5. Step 5: Solve for x
    x = 19,569,797,935.80/187,763.92
  6. Step 6: Final answer
    x = 104,225.55

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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.