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Finding the Fourth Proportional to 12,051.45, 18,073.94 and 4,259.25

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Solution

The fourth proportional to 12,051.45, 18,073.94 and 4,259.25 is: 6,387.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,051.45 : 18,073.94 = 4,259.25 : x
  2. Step 2: Convert to fraction form
    12,051.45/18,073.94 = 4,259.25/x
  3. Step 3: Cross multiply
    12,051.45x = 18,073.94 × 4,259.25
  4. Step 4: Simplify right side
    12,051.45x = 76,981,407.65
  5. Step 5: Solve for x
    x = 76,981,407.65/12,051.45
  6. Step 6: Final answer
    x = 6,387.73

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1.5x scale

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.