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Finding the Fourth Proportional to 647,554.30, 971,331.46 and 505,836.70

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Solution

The fourth proportional to 647,554.30, 971,331.46 and 505,836.70 is: 758,755.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,554.30 : 971,331.46 = 505,836.70 : x
  2. Step 2: Convert to fraction form
    647,554.30/971,331.46 = 505,836.70/x
  3. Step 3: Cross multiply
    647,554.30x = 971,331.46 × 505,836.70
  4. Step 4: Simplify right side
    647,554.30x = 491,335,100,332.58
  5. Step 5: Solve for x
    x = 491,335,100,332.58/647,554.30
  6. Step 6: Final answer
    x = 758,755.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.