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Finding the Fourth Proportional to 18,807.63, 25,953.62 and 11,258.12

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Solution

The fourth proportional to 18,807.63, 25,953.62 and 11,258.12 is: 15,535.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.63 : 25,953.62 = 11,258.12 : x
  2. Step 2: Convert to fraction form
    18,807.63/25,953.62 = 11,258.12/x
  3. Step 3: Cross multiply
    18,807.63x = 25,953.62 × 11,258.12
  4. Step 4: Simplify right side
    18,807.63x = 292,188,976.99
  5. Step 5: Solve for x
    x = 292,188,976.99/18,807.63
  6. Step 6: Final answer
    x = 15,535.66

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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.