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Finding the Fourth Proportional to 2,980.62, 4,111.83 and 1,784.79

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Solution

The fourth proportional to 2,980.62, 4,111.83 and 1,784.79 is: 2,462.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.62 : 4,111.83 = 1,784.79 : x
  2. Step 2: Convert to fraction form
    2,980.62/4,111.83 = 1,784.79/x
  3. Step 3: Cross multiply
    2,980.62x = 4,111.83 × 1,784.79
  4. Step 4: Simplify right side
    2,980.62x = 7,338,753.07
  5. Step 5: Solve for x
    x = 7,338,753.07/2,980.62
  6. Step 6: Final answer
    x = 2,462.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.