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Finding the Fourth Proportional to 19,189.80, 28,698.30 and 16,079.40

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Solution

The fourth proportional to 19,189.80, 28,698.30 and 16,079.40 is: 24,046.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189.80 : 28,698.30 = 16,079.40 : x
  2. Step 2: Convert to fraction form
    19,189.80/28,698.30 = 16,079.40/x
  3. Step 3: Cross multiply
    19,189.80x = 28,698.30 × 16,079.40
  4. Step 4: Simplify right side
    19,189.80x = 461,451,445.02
  5. Step 5: Solve for x
    x = 461,451,445.02/19,189.80
  6. Step 6: Final answer
    x = 24,046.70

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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.