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Finding the Fourth Proportional to 18,580.58, 25,639.51 and 11,025.61

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Solution

The fourth proportional to 18,580.58, 25,639.51 and 11,025.61 is: 15,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,580.58 : 25,639.51 = 11,025.61 : x
  2. Step 2: Convert to fraction form
    18,580.58/25,639.51 = 11,025.61/x
  3. Step 3: Cross multiply
    18,580.58x = 25,639.51 × 11,025.61
  4. Step 4: Simplify right side
    18,580.58x = 282,691,237.85
  5. Step 5: Solve for x
    x = 282,691,237.85/18,580.58
  6. Step 6: Final answer
    x = 15,214.34

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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.