Home / 66,578.20-99,867.30-19,193.20

Finding the Fourth Proportional to 66,578.20, 99,867.30 and 19,193.20

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Solution

The fourth proportional to 66,578.20, 99,867.30 and 19,193.20 is: 28,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,578.20 : 99,867.30 = 19,193.20 : x
  2. Step 2: Convert to fraction form
    66,578.20/99,867.30 = 19,193.20/x
  3. Step 3: Cross multiply
    66,578.20x = 99,867.30 × 19,193.20
  4. Step 4: Simplify right side
    66,578.20x = 1,916,773,062.36
  5. Step 5: Solve for x
    x = 1,916,773,062.36/66,578.20
  6. Step 6: Final answer
    x = 28,789.80

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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.