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Finding the Fourth Proportional to 186,315.62, 279,478.01 and 67,986.91

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Solution

The fourth proportional to 186,315.62, 279,478.01 and 67,986.91 is: 101,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,315.62 : 279,478.01 = 67,986.91 : x
  2. Step 2: Convert to fraction form
    186,315.62/279,478.01 = 67,986.91/x
  3. Step 3: Cross multiply
    186,315.62x = 279,478.01 × 67,986.91
  4. Step 4: Simplify right side
    186,315.62x = 19,000,846,832.16
  5. Step 5: Solve for x
    x = 19,000,846,832.16/186,315.62
  6. Step 6: Final answer
    x = 101,982.04

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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.