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Finding the Fourth Proportional to 13,894.94, 20,843.34 and 4,887.97

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Solution

The fourth proportional to 13,894.94, 20,843.34 and 4,887.97 is: 7,332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.94 : 20,843.34 = 4,887.97 : x
  2. Step 2: Convert to fraction form
    13,894.94/20,843.34 = 4,887.97/x
  3. Step 3: Cross multiply
    13,894.94x = 20,843.34 × 4,887.97
  4. Step 4: Simplify right side
    13,894.94x = 101,881,596.18
  5. Step 5: Solve for x
    x = 101,881,596.18/13,894.94
  6. Step 6: Final answer
    x = 7,332.28

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1.5x scale

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.