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Finding the Fourth Proportional to 111,008.91, 166,578.98 and 40,937.43

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Solution

The fourth proportional to 111,008.91, 166,578.98 and 40,937.43 is: 61,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,008.91 : 166,578.98 = 40,937.43 : x
  2. Step 2: Convert to fraction form
    111,008.91/166,578.98 = 40,937.43/x
  3. Step 3: Cross multiply
    111,008.91x = 166,578.98 × 40,937.43
  4. Step 4: Simplify right side
    111,008.91x = 6,819,315,333.22
  5. Step 5: Solve for x
    x = 6,819,315,333.22/111,008.91
  6. Step 6: Final answer
    x = 61,430.34

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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.