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Finding the Fourth Proportional to 108,954.57, 150,356.40 and 61,206.89

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Solution

The fourth proportional to 108,954.57, 150,356.40 and 61,206.89 is: 84,465.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,954.57 : 150,356.40 = 61,206.89 : x
  2. Step 2: Convert to fraction form
    108,954.57/150,356.40 = 61,206.89/x
  3. Step 3: Cross multiply
    108,954.57x = 150,356.40 × 61,206.89
  4. Step 4: Simplify right side
    108,954.57x = 9,202,847,844.33
  5. Step 5: Solve for x
    x = 9,202,847,844.33/108,954.57
  6. Step 6: Final answer
    x = 84,465.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.