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Finding the Fourth Proportional to 18,962.25, 28,443.15 and 14,805.69

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Solution

The fourth proportional to 18,962.25, 28,443.15 and 14,805.69 is: 22,208.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.25 : 28,443.15 = 14,805.69 : x
  2. Step 2: Convert to fraction form
    18,962.25/28,443.15 = 14,805.69/x
  3. Step 3: Cross multiply
    18,962.25x = 28,443.15 × 14,805.69
  4. Step 4: Simplify right side
    18,962.25x = 421,120,354.86
  5. Step 5: Solve for x
    x = 421,120,354.86/18,962.25
  6. Step 6: Final answer
    x = 22,208.35

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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.