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Finding the Fourth Proportional to 18,774.72, 25,894.18 and 12,061.04

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Solution

The fourth proportional to 18,774.72, 25,894.18 and 12,061.04 is: 16,634.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.72 : 25,894.18 = 12,061.04 : x
  2. Step 2: Convert to fraction form
    18,774.72/25,894.18 = 12,061.04/x
  3. Step 3: Cross multiply
    18,774.72x = 25,894.18 × 12,061.04
  4. Step 4: Simplify right side
    18,774.72x = 312,310,626.35
  5. Step 5: Solve for x
    x = 312,310,626.35/18,774.72
  6. Step 6: Final answer
    x = 16,634.64

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1.5x scale

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.