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Finding the Fourth Proportional to 12,779.16, 19,171.16 and 4,016.58

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Solution

The fourth proportional to 12,779.16, 19,171.16 and 4,016.58 is: 6,025.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.16 : 19,171.16 = 4,016.58 : x
  2. Step 2: Convert to fraction form
    12,779.16/19,171.16 = 4,016.58/x
  3. Step 3: Cross multiply
    12,779.16x = 19,171.16 × 4,016.58
  4. Step 4: Simplify right side
    12,779.16x = 77,002,497.83
  5. Step 5: Solve for x
    x = 77,002,497.83/12,779.16
  6. Step 6: Final answer
    x = 6,025.63

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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.