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Finding the Fourth Proportional to 17,986.98, 26,980.47 and 4,840.68

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Solution

The fourth proportional to 17,986.98, 26,980.47 and 4,840.68 is: 7,261.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,986.98 : 26,980.47 = 4,840.68 : x
  2. Step 2: Convert to fraction form
    17,986.98/26,980.47 = 4,840.68/x
  3. Step 3: Cross multiply
    17,986.98x = 26,980.47 × 4,840.68
  4. Step 4: Simplify right side
    17,986.98x = 130,603,821.52
  5. Step 5: Solve for x
    x = 130,603,821.52/17,986.98
  6. Step 6: Final answer
    x = 7,261.02

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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.