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Finding the Fourth Proportional to 31,118.88, 46,669.88 and 11,397.52

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Solution

The fourth proportional to 31,118.88, 46,669.88 and 11,397.52 is: 17,093.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.88 : 46,669.88 = 11,397.52 : x
  2. Step 2: Convert to fraction form
    31,118.88/46,669.88 = 11,397.52/x
  3. Step 3: Cross multiply
    31,118.88x = 46,669.88 × 11,397.52
  4. Step 4: Simplify right side
    31,118.88x = 531,920,890.70
  5. Step 5: Solve for x
    x = 531,920,890.70/31,118.88
  6. Step 6: Final answer
    x = 17,093.19

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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.