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Finding the Fourth Proportional to 186,286.72, 279,359.52 and 79,666.20

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Solution

The fourth proportional to 186,286.72, 279,359.52 and 79,666.20 is: 119,469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,286.72 : 279,359.52 = 79,666.20 : x
  2. Step 2: Convert to fraction form
    186,286.72/279,359.52 = 79,666.20/x
  3. Step 3: Cross multiply
    186,286.72x = 279,359.52 × 79,666.20
  4. Step 4: Simplify right side
    186,286.72x = 22,255,511,392.22
  5. Step 5: Solve for x
    x = 22,255,511,392.22/186,286.72
  6. Step 6: Final answer
    x = 119,469.12

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1.5x scale

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.