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Finding the Fourth Proportional to 9,879.21, 14,691.75 and 9,567.77

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Solution

The fourth proportional to 9,879.21, 14,691.75 and 9,567.77 is: 14,228.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.21 : 14,691.75 = 9,567.77 : x
  2. Step 2: Convert to fraction form
    9,879.21/14,691.75 = 9,567.77/x
  3. Step 3: Cross multiply
    9,879.21x = 14,691.75 × 9,567.77
  4. Step 4: Simplify right side
    9,879.21x = 140,567,211.44
  5. Step 5: Solve for x
    x = 140,567,211.44/9,879.21
  6. Step 6: Final answer
    x = 14,228.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.