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Finding the Fourth Proportional to 28,791.84, 39,774.96 and 22,804.32

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Solution

The fourth proportional to 28,791.84, 39,774.96 and 22,804.32 is: 31,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.84 : 39,774.96 = 22,804.32 : x
  2. Step 2: Convert to fraction form
    28,791.84/39,774.96 = 22,804.32/x
  3. Step 3: Cross multiply
    28,791.84x = 39,774.96 × 22,804.32
  4. Step 4: Simplify right side
    28,791.84x = 907,040,915.83
  5. Step 5: Solve for x
    x = 907,040,915.83/28,791.84
  6. Step 6: Final answer
    x = 31,503.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.