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Finding the Fourth Proportional to 18,658.36, 25,746.09 and 11,492.02

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Solution

The fourth proportional to 18,658.36, 25,746.09 and 11,492.02 is: 15,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.36 : 25,746.09 = 11,492.02 : x
  2. Step 2: Convert to fraction form
    18,658.36/25,746.09 = 11,492.02/x
  3. Step 3: Cross multiply
    18,658.36x = 25,746.09 × 11,492.02
  4. Step 4: Simplify right side
    18,658.36x = 295,874,581.20
  5. Step 5: Solve for x
    x = 295,874,581.20/18,658.36
  6. Step 6: Final answer
    x = 15,857.48

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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.