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Finding the Fourth Proportional to 62,281.70, 93,422.50 and 20,728.70

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Solution

The fourth proportional to 62,281.70, 93,422.50 and 20,728.70 is: 31,093.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,281.70 : 93,422.50 = 20,728.70 : x
  2. Step 2: Convert to fraction form
    62,281.70/93,422.50 = 20,728.70/x
  3. Step 3: Cross multiply
    62,281.70x = 93,422.50 × 20,728.70
  4. Step 4: Simplify right side
    62,281.70x = 1,936,526,975.75
  5. Step 5: Solve for x
    x = 1,936,526,975.75/62,281.70
  6. Step 6: Final answer
    x = 31,093.03

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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.