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Finding the Fourth Proportional to 626,553.47, 864,620.61 and 340,067.42

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Solution

The fourth proportional to 626,553.47, 864,620.61 and 340,067.42 is: 469,280.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,553.47 : 864,620.61 = 340,067.42 : x
  2. Step 2: Convert to fraction form
    626,553.47/864,620.61 = 340,067.42/x
  3. Step 3: Cross multiply
    626,553.47x = 864,620.61 × 340,067.42
  4. Step 4: Simplify right side
    626,553.47x = 294,029,300,121.53
  5. Step 5: Solve for x
    x = 294,029,300,121.53/626,553.47
  6. Step 6: Final answer
    x = 469,280.46

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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.