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Finding the Fourth Proportional to 124,739.73, 187,109.73 and 31,245.48

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Solution

The fourth proportional to 124,739.73, 187,109.73 and 31,245.48 is: 46,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,739.73 : 187,109.73 = 31,245.48 : x
  2. Step 2: Convert to fraction form
    124,739.73/187,109.73 = 31,245.48/x
  3. Step 3: Cross multiply
    124,739.73x = 187,109.73 × 31,245.48
  4. Step 4: Simplify right side
    124,739.73x = 5,846,333,326.52
  5. Step 5: Solve for x
    x = 5,846,333,326.52/124,739.73
  6. Step 6: Final answer
    x = 46,868.25

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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.