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Finding the Fourth Proportional to 28,492.68, 39,311.22 and 16,553.64

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Solution

The fourth proportional to 28,492.68, 39,311.22 and 16,553.64 is: 22,838.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,492.68 : 39,311.22 = 16,553.64 : x
  2. Step 2: Convert to fraction form
    28,492.68/39,311.22 = 16,553.64/x
  3. Step 3: Cross multiply
    28,492.68x = 39,311.22 × 16,553.64
  4. Step 4: Simplify right side
    28,492.68x = 650,743,783.84
  5. Step 5: Solve for x
    x = 650,743,783.84/28,492.68
  6. Step 6: Final answer
    x = 22,838.98

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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.