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Finding the Fourth Proportional to 18,015.52, 24,861.44 and 12,719.52

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Solution

The fourth proportional to 18,015.52, 24,861.44 and 12,719.52 is: 17,552.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015.52 : 24,861.44 = 12,719.52 : x
  2. Step 2: Convert to fraction form
    18,015.52/24,861.44 = 12,719.52/x
  3. Step 3: Cross multiply
    18,015.52x = 24,861.44 × 12,719.52
  4. Step 4: Simplify right side
    18,015.52x = 316,225,583.31
  5. Step 5: Solve for x
    x = 316,225,583.31/18,015.52
  6. Step 6: Final answer
    x = 17,552.95

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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.