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Finding the Fourth Proportional to 18,965.94, 26,161.17 and 13,652.34

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Solution

The fourth proportional to 18,965.94, 26,161.17 and 13,652.34 is: 18,831.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.94 : 26,161.17 = 13,652.34 : x
  2. Step 2: Convert to fraction form
    18,965.94/26,161.17 = 13,652.34/x
  3. Step 3: Cross multiply
    18,965.94x = 26,161.17 × 13,652.34
  4. Step 4: Simplify right side
    18,965.94x = 357,161,187.64
  5. Step 5: Solve for x
    x = 357,161,187.64/18,965.94
  6. Step 6: Final answer
    x = 18,831.72

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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.