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Finding the Fourth Proportional to 186,462.60, 279,693.90 and 86,589.60

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Solution

The fourth proportional to 186,462.60, 279,693.90 and 86,589.60 is: 129,884.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,462.60 : 279,693.90 = 86,589.60 : x
  2. Step 2: Convert to fraction form
    186,462.60/279,693.90 = 86,589.60/x
  3. Step 3: Cross multiply
    186,462.60x = 279,693.90 × 86,589.60
  4. Step 4: Simplify right side
    186,462.60x = 24,218,582,923.44
  5. Step 5: Solve for x
    x = 24,218,582,923.44/186,462.60
  6. Step 6: Final answer
    x = 129,884.40

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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.