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Finding the Fourth Proportional to 20,392.99, 30,583.89 and 5,598.40

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Solution

The fourth proportional to 20,392.99, 30,583.89 and 5,598.40 is: 8,396.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.99 : 30,583.89 = 5,598.40 : x
  2. Step 2: Convert to fraction form
    20,392.99/30,583.89 = 5,598.40/x
  3. Step 3: Cross multiply
    20,392.99x = 30,583.89 × 5,598.40
  4. Step 4: Simplify right side
    20,392.99x = 171,220,849.78
  5. Step 5: Solve for x
    x = 171,220,849.78/20,392.99
  6. Step 6: Final answer
    x = 8,396.06

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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.