Home / 66,074.20-99,111.34-19,327.12

Finding the Fourth Proportional to 66,074.20, 99,111.34 and 19,327.12

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Solution

The fourth proportional to 66,074.20, 99,111.34 and 19,327.12 is: 28,990.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,074.20 : 99,111.34 = 19,327.12 : x
  2. Step 2: Convert to fraction form
    66,074.20/99,111.34 = 19,327.12/x
  3. Step 3: Cross multiply
    66,074.20x = 99,111.34 × 19,327.12
  4. Step 4: Simplify right side
    66,074.20x = 1,915,536,761.54
  5. Step 5: Solve for x
    x = 1,915,536,761.54/66,074.20
  6. Step 6: Final answer
    x = 28,990.69

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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.