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Finding the Fourth Proportional to 647,711.10, 971,566.65 and 622,827.90

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Solution

The fourth proportional to 647,711.10, 971,566.65 and 622,827.90 is: 934,241.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,711.10 : 971,566.65 = 622,827.90 : x
  2. Step 2: Convert to fraction form
    647,711.10/971,566.65 = 622,827.90/x
  3. Step 3: Cross multiply
    647,711.10x = 971,566.65 × 622,827.90
  4. Step 4: Simplify right side
    647,711.10x = 605,118,816,329.54
  5. Step 5: Solve for x
    x = 605,118,816,329.54/647,711.10
  6. Step 6: Final answer
    x = 934,241.85

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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.