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Finding the Fourth Proportional to 12,671.75, 19,003.88 and 4,768.54

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Solution

The fourth proportional to 12,671.75, 19,003.88 and 4,768.54 is: 7,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.75 : 19,003.88 = 4,768.54 : x
  2. Step 2: Convert to fraction form
    12,671.75/19,003.88 = 4,768.54/x
  3. Step 3: Cross multiply
    12,671.75x = 19,003.88 × 4,768.54
  4. Step 4: Simplify right side
    12,671.75x = 90,620,726.35
  5. Step 5: Solve for x
    x = 90,620,726.35/12,671.75
  6. Step 6: Final answer
    x = 7,151.40

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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.