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Finding the Fourth Proportional to 4,178.99, 6,268.50 and 1,059

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Solution

The fourth proportional to 4,178.99, 6,268.50 and 1,059 is: 1,588.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.99 : 6,268.50 = 1,059 : x
  2. Step 2: Convert to fraction form
    4,178.99/6,268.50 = 1,059/x
  3. Step 3: Cross multiply
    4,178.99x = 6,268.50 × 1,059
  4. Step 4: Simplify right side
    4,178.99x = 6,638,341.50
  5. Step 5: Solve for x
    x = 6,638,341.50/4,178.99
  6. Step 6: Final answer
    x = 1,588.50

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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.