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Finding the Fourth Proportional to 111,171.69, 166,637.93 and 48,021.53

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Solution

The fourth proportional to 111,171.69, 166,637.93 and 48,021.53 is: 71,980.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,171.69 : 166,637.93 = 48,021.53 : x
  2. Step 2: Convert to fraction form
    111,171.69/166,637.93 = 48,021.53/x
  3. Step 3: Cross multiply
    111,171.69x = 166,637.93 × 48,021.53
  4. Step 4: Simplify right side
    111,171.69x = 8,002,207,281.34
  5. Step 5: Solve for x
    x = 8,002,207,281.34/111,171.69
  6. Step 6: Final answer
    x = 71,980.62

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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.