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Finding the Fourth Proportional to 659,416.65, 988,986.56 and 185,991.30

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Solution

The fourth proportional to 659,416.65, 988,986.56 and 185,991.30 is: 278,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,416.65 : 988,986.56 = 185,991.30 : x
  2. Step 2: Convert to fraction form
    659,416.65/988,986.56 = 185,991.30/x
  3. Step 3: Cross multiply
    659,416.65x = 988,986.56 × 185,991.30
  4. Step 4: Simplify right side
    659,416.65x = 183,942,895,046.97
  5. Step 5: Solve for x
    x = 183,942,895,046.97/659,416.65
  6. Step 6: Final answer
    x = 278,947.91

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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.