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Finding the Fourth Proportional to 111,074.88, 166,628.13 and 40,948.71

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Solution

The fourth proportional to 111,074.88, 166,628.13 and 40,948.71 is: 61,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,074.88 : 166,628.13 = 40,948.71 : x
  2. Step 2: Convert to fraction form
    111,074.88/166,628.13 = 40,948.71/x
  3. Step 3: Cross multiply
    111,074.88x = 166,628.13 × 40,948.71
  4. Step 4: Simplify right side
    111,074.88x = 6,823,206,973.21
  5. Step 5: Solve for x
    x = 6,823,206,973.21/111,074.88
  6. Step 6: Final answer
    x = 61,428.89

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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.