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Finding the Fourth Proportional to 3,577.63, 5,366.75 and 980.57

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Solution

The fourth proportional to 3,577.63, 5,366.75 and 980.57 is: 1,470.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,577.63 : 5,366.75 = 980.57 : x
  2. Step 2: Convert to fraction form
    3,577.63/5,366.75 = 980.57/x
  3. Step 3: Cross multiply
    3,577.63x = 5,366.75 × 980.57
  4. Step 4: Simplify right side
    3,577.63x = 5,262,474.05
  5. Step 5: Solve for x
    x = 5,262,474.05/3,577.63
  6. Step 6: Final answer
    x = 1,470.94

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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.