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Finding the Fourth Proportional to 58,786.50, 81,148.62 and 40,891.89

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Solution

The fourth proportional to 58,786.50, 81,148.62 and 40,891.89 is: 56,446.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,786.50 : 81,148.62 = 40,891.89 : x
  2. Step 2: Convert to fraction form
    58,786.50/81,148.62 = 40,891.89/x
  3. Step 3: Cross multiply
    58,786.50x = 81,148.62 × 40,891.89
  4. Step 4: Simplify right side
    58,786.50x = 3,318,320,442.69
  5. Step 5: Solve for x
    x = 3,318,320,442.69/58,786.50
  6. Step 6: Final answer
    x = 56,446.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.