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Finding the Fourth Proportional to 60,992.66, 91,443.80 and 28,955.88

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Solution

The fourth proportional to 60,992.66, 91,443.80 and 28,955.88 is: 43,412.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,992.66 : 91,443.80 = 28,955.88 : x
  2. Step 2: Convert to fraction form
    60,992.66/91,443.80 = 28,955.88/x
  3. Step 3: Cross multiply
    60,992.66x = 91,443.80 × 28,955.88
  4. Step 4: Simplify right side
    60,992.66x = 2,647,835,771.93
  5. Step 5: Solve for x
    x = 2,647,835,771.93/60,992.66
  6. Step 6: Final answer
    x = 43,412.37

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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.