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Finding the Fourth Proportional to 62,815.40, 94,223.10 and 21,262.40

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Solution

The fourth proportional to 62,815.40, 94,223.10 and 21,262.40 is: 31,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,815.40 : 94,223.10 = 21,262.40 : x
  2. Step 2: Convert to fraction form
    62,815.40/94,223.10 = 21,262.40/x
  3. Step 3: Cross multiply
    62,815.40x = 94,223.10 × 21,262.40
  4. Step 4: Simplify right side
    62,815.40x = 2,003,409,241.44
  5. Step 5: Solve for x
    x = 2,003,409,241.44/62,815.40
  6. Step 6: Final answer
    x = 31,893.60

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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.