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Finding the Fourth Proportional to 14,193.60, 19,578.76 and 8,879.16

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Solution

The fourth proportional to 14,193.60, 19,578.76 and 8,879.16 is: 12,247.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,193.60 : 19,578.76 = 8,879.16 : x
  2. Step 2: Convert to fraction form
    14,193.60/19,578.76 = 8,879.16/x
  3. Step 3: Cross multiply
    14,193.60x = 19,578.76 × 8,879.16
  4. Step 4: Simplify right side
    14,193.60x = 173,842,942.64
  5. Step 5: Solve for x
    x = 173,842,942.64/14,193.60
  6. Step 6: Final answer
    x = 12,247.98

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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.