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Finding the Fourth Proportional to 14,904.18, 20,568.05 and 8,189.40

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Solution

The fourth proportional to 14,904.18, 20,568.05 and 8,189.40 is: 11,301.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,904.18 : 20,568.05 = 8,189.40 : x
  2. Step 2: Convert to fraction form
    14,904.18/20,568.05 = 8,189.40/x
  3. Step 3: Cross multiply
    14,904.18x = 20,568.05 × 8,189.40
  4. Step 4: Simplify right side
    14,904.18x = 168,440,078.60
  5. Step 5: Solve for x
    x = 168,440,078.60/14,904.18
  6. Step 6: Final answer
    x = 11,301.53

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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.