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Finding the Fourth Proportional to 62,297.80, 93,446.70 and 20,739.40

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Solution

The fourth proportional to 62,297.80, 93,446.70 and 20,739.40 is: 31,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,297.80 : 93,446.70 = 20,739.40 : x
  2. Step 2: Convert to fraction form
    62,297.80/93,446.70 = 20,739.40/x
  3. Step 3: Cross multiply
    62,297.80x = 93,446.70 × 20,739.40
  4. Step 4: Simplify right side
    62,297.80x = 1,938,028,489.98
  5. Step 5: Solve for x
    x = 1,938,028,489.98/62,297.80
  6. Step 6: Final answer
    x = 31,109.10

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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.