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Finding the Fourth Proportional to 186,643.44, 279,965.16 and 68,263.56

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Solution

The fourth proportional to 186,643.44, 279,965.16 and 68,263.56 is: 102,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,643.44 : 279,965.16 = 68,263.56 : x
  2. Step 2: Convert to fraction form
    186,643.44/279,965.16 = 68,263.56/x
  3. Step 3: Cross multiply
    186,643.44x = 279,965.16 × 68,263.56
  4. Step 4: Simplify right side
    186,643.44x = 19,111,418,497.57
  5. Step 5: Solve for x
    x = 19,111,418,497.57/186,643.44
  6. Step 6: Final answer
    x = 102,395.34

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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.