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Finding the Fourth Proportional to 14,407.86, 19,879.84 and 8,745.58

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Solution

The fourth proportional to 14,407.86, 19,879.84 and 8,745.58 is: 12,067.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,407.86 : 19,879.84 = 8,745.58 : x
  2. Step 2: Convert to fraction form
    14,407.86/19,879.84 = 8,745.58/x
  3. Step 3: Cross multiply
    14,407.86x = 19,879.84 × 8,745.58
  4. Step 4: Simplify right side
    14,407.86x = 173,860,731.11
  5. Step 5: Solve for x
    x = 173,860,731.11/14,407.86
  6. Step 6: Final answer
    x = 12,067.08

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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.