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Finding the Fourth Proportional to 669,339.91, 923,687.18 and 401,067.91

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Solution

The fourth proportional to 669,339.91, 923,687.18 and 401,067.91 is: 553,472.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,339.91 : 923,687.18 = 401,067.91 : x
  2. Step 2: Convert to fraction form
    669,339.91/923,687.18 = 401,067.91/x
  3. Step 3: Cross multiply
    669,339.91x = 923,687.18 × 401,067.91
  4. Step 4: Simplify right side
    669,339.91x = 370,461,284,771.05
  5. Step 5: Solve for x
    x = 370,461,284,771.05/669,339.91
  6. Step 6: Final answer
    x = 553,472.58

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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.