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Finding the Fourth Proportional to 31,114.80, 46,672.20 and 27,907.20

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Solution

The fourth proportional to 31,114.80, 46,672.20 and 27,907.20 is: 41,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,114.80 : 46,672.20 = 27,907.20 : x
  2. Step 2: Convert to fraction form
    31,114.80/46,672.20 = 27,907.20/x
  3. Step 3: Cross multiply
    31,114.80x = 46,672.20 × 27,907.20
  4. Step 4: Simplify right side
    31,114.80x = 1,302,490,419.84
  5. Step 5: Solve for x
    x = 1,302,490,419.84/31,114.80
  6. Step 6: Final answer
    x = 41,860.80

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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.