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Finding the Fourth Proportional to 7,817.77, 11,726.65 and 1,974.38

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Solution

The fourth proportional to 7,817.77, 11,726.65 and 1,974.38 is: 2,961.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.77 : 11,726.65 = 1,974.38 : x
  2. Step 2: Convert to fraction form
    7,817.77/11,726.65 = 1,974.38/x
  3. Step 3: Cross multiply
    7,817.77x = 11,726.65 × 1,974.38
  4. Step 4: Simplify right side
    7,817.77x = 23,152,801.51
  5. Step 5: Solve for x
    x = 23,152,801.51/7,817.77
  6. Step 6: Final answer
    x = 2,961.56

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Similar ratio
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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.