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Finding the Fourth Proportional to 361,715.50, 499,189.79 and 200,570.56

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Solution

The fourth proportional to 361,715.50, 499,189.79 and 200,570.56 is: 276,799.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,715.50 : 499,189.79 = 200,570.56 : x
  2. Step 2: Convert to fraction form
    361,715.50/499,189.79 = 200,570.56/x
  3. Step 3: Cross multiply
    361,715.50x = 499,189.79 × 200,570.56
  4. Step 4: Simplify right side
    361,715.50x = 100,122,774,980.03
  5. Step 5: Solve for x
    x = 100,122,774,980.03/361,715.50
  6. Step 6: Final answer
    x = 276,799.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.