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Finding the Fourth Proportional to 18,665.73, 25,783.25 and 13,941.81

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Solution

The fourth proportional to 18,665.73, 25,783.25 and 13,941.81 is: 19,258.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.73 : 25,783.25 = 13,941.81 : x
  2. Step 2: Convert to fraction form
    18,665.73/25,783.25 = 13,941.81/x
  3. Step 3: Cross multiply
    18,665.73x = 25,783.25 × 13,941.81
  4. Step 4: Simplify right side
    18,665.73x = 359,465,102.97
  5. Step 5: Solve for x
    x = 359,465,102.97/18,665.73
  6. Step 6: Final answer
    x = 19,258.03

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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.