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Finding the Fourth Proportional to 77,992.74, 107,586.63 and 47,773.26

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Solution

The fourth proportional to 77,992.74, 107,586.63 and 47,773.26 is: 65,900.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,992.74 : 107,586.63 = 47,773.26 : x
  2. Step 2: Convert to fraction form
    77,992.74/107,586.63 = 47,773.26/x
  3. Step 3: Cross multiply
    77,992.74x = 107,586.63 × 47,773.26
  4. Step 4: Simplify right side
    77,992.74x = 5,139,764,047.51
  5. Step 5: Solve for x
    x = 5,139,764,047.51/77,992.74
  6. Step 6: Final answer
    x = 65,900.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.