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Finding the Fourth Proportional to 186,166.74, 279,157.86 and 66,205.71

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Solution

The fourth proportional to 186,166.74, 279,157.86 and 66,205.71 is: 99,275.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,166.74 : 279,157.86 = 66,205.71 : x
  2. Step 2: Convert to fraction form
    186,166.74/279,157.86 = 66,205.71/x
  3. Step 3: Cross multiply
    186,166.74x = 279,157.86 × 66,205.71
  4. Step 4: Simplify right side
    186,166.74x = 18,481,844,323.38
  5. Step 5: Solve for x
    x = 18,481,844,323.38/186,166.74
  6. Step 6: Final answer
    x = 99,275.76

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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.