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Finding the Fourth Proportional to 74,466.80, 111,505.80 and 48,028.40

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Solution

The fourth proportional to 74,466.80, 111,505.80 and 48,028.40 is: 71,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,466.80 : 111,505.80 = 48,028.40 : x
  2. Step 2: Convert to fraction form
    74,466.80/111,505.80 = 48,028.40/x
  3. Step 3: Cross multiply
    74,466.80x = 111,505.80 × 48,028.40
  4. Step 4: Simplify right side
    74,466.80x = 5,355,445,164.72
  5. Step 5: Solve for x
    x = 5,355,445,164.72/74,466.80
  6. Step 6: Final answer
    x = 71,917.22

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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.