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Finding the Fourth Proportional to 389,008.62, 583,611.33 and 108,525.66

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Solution

The fourth proportional to 389,008.62, 583,611.33 and 108,525.66 is: 162,815.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,008.62 : 583,611.33 = 108,525.66 : x
  2. Step 2: Convert to fraction form
    389,008.62/583,611.33 = 108,525.66/x
  3. Step 3: Cross multiply
    389,008.62x = 583,611.33 × 108,525.66
  4. Step 4: Simplify right side
    389,008.62x = 63,336,804,771.73
  5. Step 5: Solve for x
    x = 63,336,804,771.73/389,008.62
  6. Step 6: Final answer
    x = 162,815.94

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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.