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Finding the Fourth Proportional to 608,644.23, 839,778.13 and 393,525.44

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Solution

The fourth proportional to 608,644.23, 839,778.13 and 393,525.44 is: 542,967.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,644.23 : 839,778.13 = 393,525.44 : x
  2. Step 2: Convert to fraction form
    608,644.23/839,778.13 = 393,525.44/x
  3. Step 3: Cross multiply
    608,644.23x = 839,778.13 × 393,525.44
  4. Step 4: Simplify right side
    608,644.23x = 330,474,056,143
  5. Step 5: Solve for x
    x = 330,474,056,143/608,644.23
  6. Step 6: Final answer
    x = 542,967.54

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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.