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Finding the Fourth Proportional to 260,060.08, 390,104.70 and 73,057

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Solution

The fourth proportional to 260,060.08, 390,104.70 and 73,057 is: 109,589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,060.08 : 390,104.70 = 73,057 : x
  2. Step 2: Convert to fraction form
    260,060.08/390,104.70 = 73,057/x
  3. Step 3: Cross multiply
    260,060.08x = 390,104.70 × 73,057
  4. Step 4: Simplify right side
    260,060.08x = 28,499,879,067.90
  5. Step 5: Solve for x
    x = 28,499,879,067.90/260,060.08
  6. Step 6: Final answer
    x = 109,589.60

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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.