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Finding the Fourth Proportional to 18,790.54, 25,927.80 and 11,239.96

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Solution

The fourth proportional to 18,790.54, 25,927.80 and 11,239.96 is: 15,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.54 : 25,927.80 = 11,239.96 : x
  2. Step 2: Convert to fraction form
    18,790.54/25,927.80 = 11,239.96/x
  3. Step 3: Cross multiply
    18,790.54x = 25,927.80 × 11,239.96
  4. Step 4: Simplify right side
    18,790.54x = 291,427,434.89
  5. Step 5: Solve for x
    x = 291,427,434.89/18,790.54
  6. Step 6: Final answer
    x = 15,509.26

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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.