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Finding the Fourth Proportional to 690,405.88, 952,567.60 and 445,286.92

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Solution

The fourth proportional to 690,405.88, 952,567.60 and 445,286.92 is: 614,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,405.88 : 952,567.60 = 445,286.92 : x
  2. Step 2: Convert to fraction form
    690,405.88/952,567.60 = 445,286.92/x
  3. Step 3: Cross multiply
    690,405.88x = 952,567.60 × 445,286.92
  4. Step 4: Simplify right side
    690,405.88x = 424,165,892,695.79
  5. Step 5: Solve for x
    x = 424,165,892,695.79/690,405.88
  6. Step 6: Final answer
    x = 614,371.78

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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.