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Finding the Fourth Proportional to 668,114.10, 1,002,244.05 and 647,118.90

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Solution

The fourth proportional to 668,114.10, 1,002,244.05 and 647,118.90 is: 970,748.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,114.10 : 1,002,244.05 = 647,118.90 : x
  2. Step 2: Convert to fraction form
    668,114.10/1,002,244.05 = 647,118.90/x
  3. Step 3: Cross multiply
    668,114.10x = 1,002,244.05 × 647,118.90
  4. Step 4: Simplify right side
    668,114.10x = 648,571,067,167.55
  5. Step 5: Solve for x
    x = 648,571,067,167.55/668,114.10
  6. Step 6: Final answer
    x = 970,748.96

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Double scale
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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.