Home / 66,381.26-99,571.89-19,630.49

Finding the Fourth Proportional to 66,381.26, 99,571.89 and 19,630.49

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Solution

The fourth proportional to 66,381.26, 99,571.89 and 19,630.49 is: 29,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,381.26 : 99,571.89 = 19,630.49 : x
  2. Step 2: Convert to fraction form
    66,381.26/99,571.89 = 19,630.49/x
  3. Step 3: Cross multiply
    66,381.26x = 99,571.89 × 19,630.49
  4. Step 4: Simplify right side
    66,381.26x = 1,954,644,990.93
  5. Step 5: Solve for x
    x = 1,954,644,990.93/66,381.26
  6. Step 6: Final answer
    x = 29,445.74

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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.