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Finding the Fourth Proportional to 20,072.80, 26,715.13 and 20,072.80

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Solution

The fourth proportional to 20,072.80, 26,715.13 and 20,072.80 is: 26,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.80 : 26,715.13 = 20,072.80 : x
  2. Step 2: Convert to fraction form
    20,072.80/26,715.13 = 20,072.80/x
  3. Step 3: Cross multiply
    20,072.80x = 26,715.13 × 20,072.80
  4. Step 4: Simplify right side
    20,072.80x = 536,247,461.46
  5. Step 5: Solve for x
    x = 536,247,461.46/20,072.80
  6. Step 6: Final answer
    x = 26,715.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.