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Finding the Fourth Proportional to 647,261.60, 971,038.20 and 198,003.20

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Solution

The fourth proportional to 647,261.60, 971,038.20 and 198,003.20 is: 297,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,261.60 : 971,038.20 = 198,003.20 : x
  2. Step 2: Convert to fraction form
    647,261.60/971,038.20 = 198,003.20/x
  3. Step 3: Cross multiply
    647,261.60x = 971,038.20 × 198,003.20
  4. Step 4: Simplify right side
    647,261.60x = 192,268,670,922.24
  5. Step 5: Solve for x
    x = 192,268,670,922.24/647,261.60
  6. Step 6: Final answer
    x = 297,049.40

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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.