Home / 66,131.28-99,197.73-19,385.10

Finding the Fourth Proportional to 66,131.28, 99,197.73 and 19,385.10

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Solution

The fourth proportional to 66,131.28, 99,197.73 and 19,385.10 is: 29,077.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,131.28 : 99,197.73 = 19,385.10 : x
  2. Step 2: Convert to fraction form
    66,131.28/99,197.73 = 19,385.10/x
  3. Step 3: Cross multiply
    66,131.28x = 99,197.73 × 19,385.10
  4. Step 4: Simplify right side
    66,131.28x = 1,922,957,915.82
  5. Step 5: Solve for x
    x = 1,922,957,915.82/66,131.28
  6. Step 6: Final answer
    x = 29,077.89

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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.