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Finding the Fourth Proportional to 18,492.22, 27,738.33 and 15,712.30

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Solution

The fourth proportional to 18,492.22, 27,738.33 and 15,712.30 is: 23,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.22 : 27,738.33 = 15,712.30 : x
  2. Step 2: Convert to fraction form
    18,492.22/27,738.33 = 15,712.30/x
  3. Step 3: Cross multiply
    18,492.22x = 27,738.33 × 15,712.30
  4. Step 4: Simplify right side
    18,492.22x = 435,832,962.46
  5. Step 5: Solve for x
    x = 435,832,962.46/18,492.22
  6. Step 6: Final answer
    x = 23,568.45

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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.