Home / 66,508.21-99,778.92-19,761.09

Finding the Fourth Proportional to 66,508.21, 99,778.92 and 19,761.09

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Solution

The fourth proportional to 66,508.21, 99,778.92 and 19,761.09 is: 29,646.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508.21 : 99,778.92 = 19,761.09 : x
  2. Step 2: Convert to fraction form
    66,508.21/99,778.92 = 19,761.09/x
  3. Step 3: Cross multiply
    66,508.21x = 99,778.92 × 19,761.09
  4. Step 4: Simplify right side
    66,508.21x = 1,971,740,218.22
  5. Step 5: Solve for x
    x = 1,971,740,218.22/66,508.21
  6. Step 6: Final answer
    x = 29,646.57

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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.