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Finding the Fourth Proportional to 52,791.94, 72,852.21 and 28,917.18

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Solution

The fourth proportional to 52,791.94, 72,852.21 and 28,917.18 is: 39,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,791.94 : 72,852.21 = 28,917.18 : x
  2. Step 2: Convert to fraction form
    52,791.94/72,852.21 = 28,917.18/x
  3. Step 3: Cross multiply
    52,791.94x = 72,852.21 × 28,917.18
  4. Step 4: Simplify right side
    52,791.94x = 2,106,680,469.97
  5. Step 5: Solve for x
    x = 2,106,680,469.97/52,791.94
  6. Step 6: Final answer
    x = 39,905.34

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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.