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Finding the Fourth Proportional to 108,393.53, 149,583.78 and 60,647.67

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Solution

The fourth proportional to 108,393.53, 149,583.78 and 60,647.67 is: 83,694.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,393.53 : 149,583.78 = 60,647.67 : x
  2. Step 2: Convert to fraction form
    108,393.53/149,583.78 = 60,647.67/x
  3. Step 3: Cross multiply
    108,393.53x = 149,583.78 × 60,647.67
  4. Step 4: Simplify right side
    108,393.53x = 9,071,907,726.79
  5. Step 5: Solve for x
    x = 9,071,907,726.79/108,393.53
  6. Step 6: Final answer
    x = 83,694.18

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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.