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Finding the Fourth Proportional to 111,275.70, 166,881.15 and 61,379.70

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Solution

The fourth proportional to 111,275.70, 166,881.15 and 61,379.70 is: 92,051.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,275.70 : 166,881.15 = 61,379.70 : x
  2. Step 2: Convert to fraction form
    111,275.70/166,881.15 = 61,379.70/x
  3. Step 3: Cross multiply
    111,275.70x = 166,881.15 × 61,379.70
  4. Step 4: Simplify right side
    111,275.70x = 10,243,114,922.66
  5. Step 5: Solve for x
    x = 10,243,114,922.66/111,275.70
  6. Step 6: Final answer
    x = 92,051.68

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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.