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Finding the Fourth Proportional to 54,969.30, 77,190.30 and 54,969.30

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Solution

The fourth proportional to 54,969.30, 77,190.30 and 54,969.30 is: 77,190.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,969.30 : 77,190.30 = 54,969.30 : x
  2. Step 2: Convert to fraction form
    54,969.30/77,190.30 = 54,969.30/x
  3. Step 3: Cross multiply
    54,969.30x = 77,190.30 × 54,969.30
  4. Step 4: Simplify right side
    54,969.30x = 4,243,096,757.79
  5. Step 5: Solve for x
    x = 4,243,096,757.79/54,969.30
  6. Step 6: Final answer
    x = 77,190.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.