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Finding the Fourth Proportional to 18,391.98, 27,598.97 and 8,534.67

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Solution

The fourth proportional to 18,391.98, 27,598.97 and 8,534.67 is: 12,807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.98 : 27,598.97 = 8,534.67 : x
  2. Step 2: Convert to fraction form
    18,391.98/27,598.97 = 8,534.67/x
  3. Step 3: Cross multiply
    18,391.98x = 27,598.97 × 8,534.67
  4. Step 4: Simplify right side
    18,391.98x = 235,548,058.62
  5. Step 5: Solve for x
    x = 235,548,058.62/18,391.98
  6. Step 6: Final answer
    x = 12,807.11

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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.