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Finding the Fourth Proportional to 722,191.46, 996,612.04 and 399,894.64

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Solution

The fourth proportional to 722,191.46, 996,612.04 and 399,894.64 is: 551,847.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,191.46 : 996,612.04 = 399,894.64 : x
  2. Step 2: Convert to fraction form
    722,191.46/996,612.04 = 399,894.64/x
  3. Step 3: Cross multiply
    722,191.46x = 996,612.04 × 399,894.64
  4. Step 4: Simplify right side
    722,191.46x = 398,539,808,714.40
  5. Step 5: Solve for x
    x = 398,539,808,714.40/722,191.46
  6. Step 6: Final answer
    x = 551,847.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.