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Finding the Fourth Proportional to 11,800.67, 17,701.06 and 4,780.82

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Solution

The fourth proportional to 11,800.67, 17,701.06 and 4,780.82 is: 7,171.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,800.67 : 17,701.06 = 4,780.82 : x
  2. Step 2: Convert to fraction form
    11,800.67/17,701.06 = 4,780.82/x
  3. Step 3: Cross multiply
    11,800.67x = 17,701.06 × 4,780.82
  4. Step 4: Simplify right side
    11,800.67x = 84,625,557.77
  5. Step 5: Solve for x
    x = 84,625,557.77/11,800.67
  6. Step 6: Final answer
    x = 7,171.25

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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.