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Finding the Fourth Proportional to 15,117, 22,676.78 and 4,173

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Solution

The fourth proportional to 15,117, 22,676.78 and 4,173 is: 6,259.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117 : 22,676.78 = 4,173 : x
  2. Step 2: Convert to fraction form
    15,117/22,676.78 = 4,173/x
  3. Step 3: Cross multiply
    15,117x = 22,676.78 × 4,173
  4. Step 4: Simplify right side
    15,117x = 94,630,202.94
  5. Step 5: Solve for x
    x = 94,630,202.94/15,117
  6. Step 6: Final answer
    x = 6,259.85

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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.