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Finding the Fourth Proportional to 647,710.10, 971,565.15 and 622,826.90

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Solution

The fourth proportional to 647,710.10, 971,565.15 and 622,826.90 is: 934,240.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,710.10 : 971,565.15 = 622,826.90 : x
  2. Step 2: Convert to fraction form
    647,710.10/971,565.15 = 622,826.90/x
  3. Step 3: Cross multiply
    647,710.10x = 971,565.15 × 622,826.90
  4. Step 4: Simplify right side
    647,710.10x = 605,116,910,522.54
  5. Step 5: Solve for x
    x = 605,116,910,522.54/647,710.10
  6. Step 6: Final answer
    x = 934,240.35

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Similar ratio
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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.