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Finding the Fourth Proportional to 19,090.30, 28,604.13 and 18,361.30

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Solution

The fourth proportional to 19,090.30, 28,604.13 and 18,361.30 is: 27,511.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,090.30 : 28,604.13 = 18,361.30 : x
  2. Step 2: Convert to fraction form
    19,090.30/28,604.13 = 18,361.30/x
  3. Step 3: Cross multiply
    19,090.30x = 28,604.13 × 18,361.30
  4. Step 4: Simplify right side
    19,090.30x = 525,209,012.17
  5. Step 5: Solve for x
    x = 525,209,012.17/19,090.30
  6. Step 6: Final answer
    x = 27,511.83

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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.