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Finding the Fourth Proportional to 38,705.93, 53,419.13 and 22,791.86

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Solution

The fourth proportional to 38,705.93, 53,419.13 and 22,791.86 is: 31,455.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,705.93 : 53,419.13 = 22,791.86 : x
  2. Step 2: Convert to fraction form
    38,705.93/53,419.13 = 22,791.86/x
  3. Step 3: Cross multiply
    38,705.93x = 53,419.13 × 22,791.86
  4. Step 4: Simplify right side
    38,705.93x = 1,217,520,951.23
  5. Step 5: Solve for x
    x = 1,217,520,951.23/38,705.93
  6. Step 6: Final answer
    x = 31,455.67

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