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Finding the Fourth Proportional to 123,640.53, 185,455.67 and 57,058.53

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Solution

The fourth proportional to 123,640.53, 185,455.67 and 57,058.53 is: 85,585.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,640.53 : 185,455.67 = 57,058.53 : x
  2. Step 2: Convert to fraction form
    123,640.53/185,455.67 = 57,058.53/x
  3. Step 3: Cross multiply
    123,640.53x = 185,455.67 × 57,058.53
  4. Step 4: Simplify right side
    123,640.53x = 10,581,827,625.07
  5. Step 5: Solve for x
    x = 10,581,827,625.07/123,640.53
  6. Step 6: Final answer
    x = 85,585.43

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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.