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Finding the Fourth Proportional to 18,251.94, 25,181.49 and 14,888.94

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Solution

The fourth proportional to 18,251.94, 25,181.49 and 14,888.94 is: 20,541.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.94 : 25,181.49 = 14,888.94 : x
  2. Step 2: Convert to fraction form
    18,251.94/25,181.49 = 14,888.94/x
  3. Step 3: Cross multiply
    18,251.94x = 25,181.49 × 14,888.94
  4. Step 4: Simplify right side
    18,251.94x = 374,925,693.72
  5. Step 5: Solve for x
    x = 374,925,693.72/18,251.94
  6. Step 6: Final answer
    x = 20,541.69

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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.