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Finding the Fourth Proportional to 722,251.80, 996,706.58 and 399,961.51

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Solution

The fourth proportional to 722,251.80, 996,706.58 and 399,961.51 is: 551,946.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,251.80 : 996,706.58 = 399,961.51 : x
  2. Step 2: Convert to fraction form
    722,251.80/996,706.58 = 399,961.51/x
  3. Step 3: Cross multiply
    722,251.80x = 996,706.58 × 399,961.51
  4. Step 4: Simplify right side
    722,251.80x = 398,644,268,763.74
  5. Step 5: Solve for x
    x = 398,644,268,763.74/722,251.80
  6. Step 6: Final answer
    x = 551,946.38

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Double scale
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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.