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Finding the Fourth Proportional to 38,223.68, 52,749.60 and 21,458.24

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Solution

The fourth proportional to 38,223.68, 52,749.60 and 21,458.24 is: 29,612.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,223.68 : 52,749.60 = 21,458.24 : x
  2. Step 2: Convert to fraction form
    38,223.68/52,749.60 = 21,458.24/x
  3. Step 3: Cross multiply
    38,223.68x = 52,749.60 × 21,458.24
  4. Step 4: Simplify right side
    38,223.68x = 1,131,913,576.70
  5. Step 5: Solve for x
    x = 1,131,913,576.70/38,223.68
  6. Step 6: Final answer
    x = 29,612.89

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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.