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Finding the Fourth Proportional to 18,763.53, 28,256.07 and 16,327.67

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Solution

The fourth proportional to 18,763.53, 28,256.07 and 16,327.67 is: 24,587.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.53 : 28,256.07 = 16,327.67 : x
  2. Step 2: Convert to fraction form
    18,763.53/28,256.07 = 16,327.67/x
  3. Step 3: Cross multiply
    18,763.53x = 28,256.07 × 16,327.67
  4. Step 4: Simplify right side
    18,763.53x = 461,355,645.18
  5. Step 5: Solve for x
    x = 461,355,645.18/18,763.53
  6. Step 6: Final answer
    x = 24,587.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.