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Finding the Fourth Proportional to 77,267.44, 106,218.74 and 66,472.72

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Solution

The fourth proportional to 77,267.44, 106,218.74 and 66,472.72 is: 91,379.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,267.44 : 106,218.74 = 66,472.72 : x
  2. Step 2: Convert to fraction form
    77,267.44/106,218.74 = 66,472.72/x
  3. Step 3: Cross multiply
    77,267.44x = 106,218.74 × 66,472.72
  4. Step 4: Simplify right side
    77,267.44x = 7,060,648,562.77
  5. Step 5: Solve for x
    x = 7,060,648,562.77/77,267.44
  6. Step 6: Final answer
    x = 91,379.35

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.