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Finding the Fourth Proportional to 663,950.88, 916,218 and 362,086.56

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Solution

The fourth proportional to 663,950.88, 916,218 and 362,086.56 is: 499,660.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,950.88 : 916,218 = 362,086.56 : x
  2. Step 2: Convert to fraction form
    663,950.88/916,218 = 362,086.56/x
  3. Step 3: Cross multiply
    663,950.88x = 916,218 × 362,086.56
  4. Step 4: Simplify right side
    663,950.88x = 331,750,223,830.08
  5. Step 5: Solve for x
    x = 331,750,223,830.08/663,950.88
  6. Step 6: Final answer
    x = 499,660.79

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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.