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Finding the Fourth Proportional to 186,580.72, 279,961.06 and 91,759.46

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Solution

The fourth proportional to 186,580.72, 279,961.06 and 91,759.46 is: 137,683.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,580.72 : 279,961.06 = 91,759.46 : x
  2. Step 2: Convert to fraction form
    186,580.72/279,961.06 = 91,759.46/x
  3. Step 3: Cross multiply
    186,580.72x = 279,961.06 × 91,759.46
  4. Step 4: Simplify right side
    186,580.72x = 25,689,075,016.86
  5. Step 5: Solve for x
    x = 25,689,075,016.86/186,580.72
  6. Step 6: Final answer
    x = 137,683.44

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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.