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Finding the Fourth Proportional to 18,355.96, 25,342.50 and 11,651.32

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Solution

The fourth proportional to 18,355.96, 25,342.50 and 11,651.32 is: 16,085.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.96 : 25,342.50 = 11,651.32 : x
  2. Step 2: Convert to fraction form
    18,355.96/25,342.50 = 11,651.32/x
  3. Step 3: Cross multiply
    18,355.96x = 25,342.50 × 11,651.32
  4. Step 4: Simplify right side
    18,355.96x = 295,273,577.10
  5. Step 5: Solve for x
    x = 295,273,577.10/18,355.96
  6. Step 6: Final answer
    x = 16,085.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.