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Finding the Fourth Proportional to 17,765.80, 26,648.72 and 4,618.06

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Solution

The fourth proportional to 17,765.80, 26,648.72 and 4,618.06 is: 6,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,765.80 : 26,648.72 = 4,618.06 : x
  2. Step 2: Convert to fraction form
    17,765.80/26,648.72 = 4,618.06/x
  3. Step 3: Cross multiply
    17,765.80x = 26,648.72 × 4,618.06
  4. Step 4: Simplify right side
    17,765.80x = 123,065,387.88
  5. Step 5: Solve for x
    x = 123,065,387.88/17,765.80
  6. Step 6: Final answer
    x = 6,927.10

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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.