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Finding the Fourth Proportional to 27,661.43, 41,492.16 and 11,856.20

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Solution

The fourth proportional to 27,661.43, 41,492.16 and 11,856.20 is: 17,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.43 : 41,492.16 = 11,856.20 : x
  2. Step 2: Convert to fraction form
    27,661.43/41,492.16 = 11,856.20/x
  3. Step 3: Cross multiply
    27,661.43x = 41,492.16 × 11,856.20
  4. Step 4: Simplify right side
    27,661.43x = 491,939,139.93
  5. Step 5: Solve for x
    x = 491,939,139.93/27,661.43
  6. Step 6: Final answer
    x = 17,784.30

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1.5x scale

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.