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Finding the Fourth Proportional to 60,649.14, 90,986.67 and 21,207.54

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Solution

The fourth proportional to 60,649.14, 90,986.67 and 21,207.54 is: 31,815.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,649.14 : 90,986.67 = 21,207.54 : x
  2. Step 2: Convert to fraction form
    60,649.14/90,986.67 = 21,207.54/x
  3. Step 3: Cross multiply
    60,649.14x = 90,986.67 × 21,207.54
  4. Step 4: Simplify right side
    60,649.14x = 1,929,603,443.49
  5. Step 5: Solve for x
    x = 1,929,603,443.49/60,649.14
  6. Step 6: Final answer
    x = 31,815.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.