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Finding the Fourth Proportional to 186,978.60, 280,404.32 and 60,584.58

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Solution

The fourth proportional to 186,978.60, 280,404.32 and 60,584.58 is: 90,856.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,978.60 : 280,404.32 = 60,584.58 : x
  2. Step 2: Convert to fraction form
    186,978.60/280,404.32 = 60,584.58/x
  3. Step 3: Cross multiply
    186,978.60x = 280,404.32 × 60,584.58
  4. Step 4: Simplify right side
    186,978.60x = 16,988,177,654.46
  5. Step 5: Solve for x
    x = 16,988,177,654.46/186,978.60
  6. Step 6: Final answer
    x = 90,856.27

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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.