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Finding the Fourth Proportional to 447,078.40, 616,965.38 and 253,522.82

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Solution

The fourth proportional to 447,078.40, 616,965.38 and 253,522.82 is: 349,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,078.40 : 616,965.38 = 253,522.82 : x
  2. Step 2: Convert to fraction form
    447,078.40/616,965.38 = 253,522.82/x
  3. Step 3: Cross multiply
    447,078.40x = 616,965.38 × 253,522.82
  4. Step 4: Simplify right side
    447,078.40x = 156,414,802,979.97
  5. Step 5: Solve for x
    x = 156,414,802,979.97/447,078.40
  6. Step 6: Final answer
    x = 349,859.90

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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.