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Finding the Fourth Proportional to 108,640.16, 149,927.76 and 60,893.16

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Solution

The fourth proportional to 108,640.16, 149,927.76 and 60,893.16 is: 84,034.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,640.16 : 149,927.76 = 60,893.16 : x
  2. Step 2: Convert to fraction form
    108,640.16/149,927.76 = 60,893.16/x
  3. Step 3: Cross multiply
    108,640.16x = 149,927.76 × 60,893.16
  4. Step 4: Simplify right side
    108,640.16x = 9,129,575,078.12
  5. Step 5: Solve for x
    x = 9,129,575,078.12/108,640.16
  6. Step 6: Final answer
    x = 84,034.99

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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.