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Finding the Fourth Proportional to 18,793.64, 28,170.07 and 9,411.04

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Solution

The fourth proportional to 18,793.64, 28,170.07 and 9,411.04 is: 14,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.64 : 28,170.07 = 9,411.04 : x
  2. Step 2: Convert to fraction form
    18,793.64/28,170.07 = 9,411.04/x
  3. Step 3: Cross multiply
    18,793.64x = 28,170.07 × 9,411.04
  4. Step 4: Simplify right side
    18,793.64x = 265,109,514.72
  5. Step 5: Solve for x
    x = 265,109,514.72/18,793.64
  6. Step 6: Final answer
    x = 14,106.35

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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.