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Finding the Fourth Proportional to 50,407.95, 69,569.60 and 28,906.11

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Solution

The fourth proportional to 50,407.95, 69,569.60 and 28,906.11 is: 39,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,407.95 : 69,569.60 = 28,906.11 : x
  2. Step 2: Convert to fraction form
    50,407.95/69,569.60 = 28,906.11/x
  3. Step 3: Cross multiply
    50,407.95x = 69,569.60 × 28,906.11
  4. Step 4: Simplify right side
    50,407.95x = 2,010,986,365.73
  5. Step 5: Solve for x
    x = 2,010,986,365.73/50,407.95
  6. Step 6: Final answer
    x = 39,894.23

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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.