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Finding the Fourth Proportional to 31,113.54, 46,670.07 and 7,739.98

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Solution

The fourth proportional to 31,113.54, 46,670.07 and 7,739.98 is: 11,609.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,113.54 : 46,670.07 = 7,739.98 : x
  2. Step 2: Convert to fraction form
    31,113.54/46,670.07 = 7,739.98/x
  3. Step 3: Cross multiply
    31,113.54x = 46,670.07 × 7,739.98
  4. Step 4: Simplify right side
    31,113.54x = 361,225,408.40
  5. Step 5: Solve for x
    x = 361,225,408.40/31,113.54
  6. Step 6: Final answer
    x = 11,609.91

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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.