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Finding the Fourth Proportional to 647,439,414.40, 971,159,121.60 and 647,439,414.40

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Solution

The fourth proportional to 647,439,414.40, 971,159,121.60 and 647,439,414.40 is: 971,159,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,439,414.40 : 971,159,121.60 = 647,439,414.40 : x
  2. Step 2: Convert to fraction form
    647,439,414.40/971,159,121.60 = 647,439,414.40/x
  3. Step 3: Cross multiply
    647,439,414.40x = 971,159,121.60 × 647,439,414.40
  4. Step 4: Simplify right side
    647,439,414.40x = 628,766,692,977,922,432
  5. Step 5: Solve for x
    x = 628,766,692,977,922,432/647,439,414.40
  6. Step 6: Final answer
    x = 971,159,121.60

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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.