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Finding the Fourth Proportional to 186,568.66, 279,912.15 and 66,622.98

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Solution

The fourth proportional to 186,568.66, 279,912.15 and 66,622.98 is: 99,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,568.66 : 279,912.15 = 66,622.98 : x
  2. Step 2: Convert to fraction form
    186,568.66/279,912.15 = 66,622.98/x
  3. Step 3: Cross multiply
    186,568.66x = 279,912.15 × 66,622.98
  4. Step 4: Simplify right side
    186,568.66x = 18,648,581,571.21
  5. Step 5: Solve for x
    x = 18,648,581,571.21/186,568.66
  6. Step 6: Final answer
    x = 99,955.60

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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.