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Finding the Fourth Proportional to 18,677, 25,774.26 and 11,225

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Solution

The fourth proportional to 18,677, 25,774.26 and 11,225 is: 15,490.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677 : 25,774.26 = 11,225 : x
  2. Step 2: Convert to fraction form
    18,677/25,774.26 = 11,225/x
  3. Step 3: Cross multiply
    18,677x = 25,774.26 × 11,225
  4. Step 4: Simplify right side
    18,677x = 289,316,068.50
  5. Step 5: Solve for x
    x = 289,316,068.50/18,677
  6. Step 6: Final answer
    x = 15,490.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.