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Finding the Fourth Proportional to 19,189.58, 28,784.36 and 8,093.32

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Solution

The fourth proportional to 19,189.58, 28,784.36 and 8,093.32 is: 12,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189.58 : 28,784.36 = 8,093.32 : x
  2. Step 2: Convert to fraction form
    19,189.58/28,784.36 = 8,093.32/x
  3. Step 3: Cross multiply
    19,189.58x = 28,784.36 × 8,093.32
  4. Step 4: Simplify right side
    19,189.58x = 232,960,984.75
  5. Step 5: Solve for x
    x = 232,960,984.75/19,189.58
  6. Step 6: Final answer
    x = 12,139.98

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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.