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Finding the Fourth Proportional to 141,040.41, 211,361.73 and 77,888.97

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Solution

The fourth proportional to 141,040.41, 211,361.73 and 77,888.97 is: 116,723.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,040.41 : 211,361.73 = 77,888.97 : x
  2. Step 2: Convert to fraction form
    141,040.41/211,361.73 = 77,888.97/x
  3. Step 3: Cross multiply
    141,040.41x = 211,361.73 × 77,888.97
  4. Step 4: Simplify right side
    141,040.41x = 16,462,747,447.12
  5. Step 5: Solve for x
    x = 16,462,747,447.12/141,040.41
  6. Step 6: Final answer
    x = 116,723.62

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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.