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Finding the Fourth Proportional to 14,793.58, 20,390.79 and 10,488.09

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Solution

The fourth proportional to 14,793.58, 20,390.79 and 10,488.09 is: 14,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,793.58 : 20,390.79 = 10,488.09 : x
  2. Step 2: Convert to fraction form
    14,793.58/20,390.79 = 10,488.09/x
  3. Step 3: Cross multiply
    14,793.58x = 20,390.79 × 10,488.09
  4. Step 4: Simplify right side
    14,793.58x = 213,860,440.69
  5. Step 5: Solve for x
    x = 213,860,440.69/14,793.58
  6. Step 6: Final answer
    x = 14,456.30

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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.