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Finding the Fourth Proportional to 17,811.81, 26,706.89 and 12,259.04

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Solution

The fourth proportional to 17,811.81, 26,706.89 and 12,259.04 is: 18,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.81 : 26,706.89 = 12,259.04 : x
  2. Step 2: Convert to fraction form
    17,811.81/26,706.89 = 12,259.04/x
  3. Step 3: Cross multiply
    17,811.81x = 26,706.89 × 12,259.04
  4. Step 4: Simplify right side
    17,811.81x = 327,400,637.96
  5. Step 5: Solve for x
    x = 327,400,637.96/17,811.81
  6. Step 6: Final answer
    x = 18,381.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.