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Finding the Fourth Proportional to 45,909.42, 68,864.44 and 12,633

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Solution

The fourth proportional to 45,909.42, 68,864.44 and 12,633 is: 18,949.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,909.42 : 68,864.44 = 12,633 : x
  2. Step 2: Convert to fraction form
    45,909.42/68,864.44 = 12,633/x
  3. Step 3: Cross multiply
    45,909.42x = 68,864.44 × 12,633
  4. Step 4: Simplify right side
    45,909.42x = 869,964,470.52
  5. Step 5: Solve for x
    x = 869,964,470.52/45,909.42
  6. Step 6: Final answer
    x = 18,949.59

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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.