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Finding the Fourth Proportional to 20,592.90, 30,861.54 and 15,020.10

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Solution

The fourth proportional to 20,592.90, 30,861.54 and 15,020.10 is: 22,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.90 : 30,861.54 = 15,020.10 : x
  2. Step 2: Convert to fraction form
    20,592.90/30,861.54 = 15,020.10/x
  3. Step 3: Cross multiply
    20,592.90x = 30,861.54 × 15,020.10
  4. Step 4: Simplify right side
    20,592.90x = 463,543,416.95
  5. Step 5: Solve for x
    x = 463,543,416.95/20,592.90
  6. Step 6: Final answer
    x = 22,509.87

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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.