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Finding the Fourth Proportional to 20,492.49, 28,245.65 and 14,516.49

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Solution

The fourth proportional to 20,492.49, 28,245.65 and 14,516.49 is: 20,008.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.49 : 28,245.65 = 14,516.49 : x
  2. Step 2: Convert to fraction form
    20,492.49/28,245.65 = 14,516.49/x
  3. Step 3: Cross multiply
    20,492.49x = 28,245.65 × 14,516.49
  4. Step 4: Simplify right side
    20,492.49x = 410,027,623.19
  5. Step 5: Solve for x
    x = 410,027,623.19/20,492.49
  6. Step 6: Final answer
    x = 20,008.68

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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.