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Finding the Fourth Proportional to 4,798.90, 7,199.36 and 2,719.90

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Solution

The fourth proportional to 4,798.90, 7,199.36 and 2,719.90 is: 4,080.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,798.90 : 7,199.36 = 2,719.90 : x
  2. Step 2: Convert to fraction form
    4,798.90/7,199.36 = 2,719.90/x
  3. Step 3: Cross multiply
    4,798.90x = 7,199.36 × 2,719.90
  4. Step 4: Simplify right side
    4,798.90x = 19,581,539.26
  5. Step 5: Solve for x
    x = 19,581,539.26/4,798.90
  6. Step 6: Final answer
    x = 4,080.42

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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.