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Finding the Fourth Proportional to 647,710.60, 971,565.90 and 622,827.40

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Solution

The fourth proportional to 647,710.60, 971,565.90 and 622,827.40 is: 934,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,710.60 : 971,565.90 = 622,827.40 : x
  2. Step 2: Convert to fraction form
    647,710.60/971,565.90 = 622,827.40/x
  3. Step 3: Cross multiply
    647,710.60x = 971,565.90 × 622,827.40
  4. Step 4: Simplify right side
    647,710.60x = 605,117,863,425.66
  5. Step 5: Solve for x
    x = 605,117,863,425.66/647,710.60
  6. Step 6: Final answer
    x = 934,241.10

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Double scale
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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.