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Finding the Fourth Proportional to 186,435.26, 279,765.31 and 66,483.09

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Solution

The fourth proportional to 186,435.26, 279,765.31 and 66,483.09 is: 99,764.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,435.26 : 279,765.31 = 66,483.09 : x
  2. Step 2: Convert to fraction form
    186,435.26/279,765.31 = 66,483.09/x
  3. Step 3: Cross multiply
    186,435.26x = 279,765.31 × 66,483.09
  4. Step 4: Simplify right side
    186,435.26x = 18,599,662,775.71
  5. Step 5: Solve for x
    x = 18,599,662,775.71/186,435.26
  6. Step 6: Final answer
    x = 99,764.73

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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.