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Finding the Fourth Proportional to 7,170.73, 9,894.55 and 4,026.31

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Solution

The fourth proportional to 7,170.73, 9,894.55 and 4,026.31 is: 5,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.73 : 9,894.55 = 4,026.31 : x
  2. Step 2: Convert to fraction form
    7,170.73/9,894.55 = 4,026.31/x
  3. Step 3: Cross multiply
    7,170.73x = 9,894.55 × 4,026.31
  4. Step 4: Simplify right side
    7,170.73x = 39,838,525.61
  5. Step 5: Solve for x
    x = 39,838,525.61/7,170.73
  6. Step 6: Final answer
    x = 5,555.71

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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.