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Finding the Fourth Proportional to 18,903.57, 26,079.90 and 18,874.41

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Solution

The fourth proportional to 18,903.57, 26,079.90 and 18,874.41 is: 26,039.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.57 : 26,079.90 = 18,874.41 : x
  2. Step 2: Convert to fraction form
    18,903.57/26,079.90 = 18,874.41/x
  3. Step 3: Cross multiply
    18,903.57x = 26,079.90 × 18,874.41
  4. Step 4: Simplify right side
    18,903.57x = 492,242,725.36
  5. Step 5: Solve for x
    x = 492,242,725.36/18,903.57
  6. Step 6: Final answer
    x = 26,039.67

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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.