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Finding the Fourth Proportional to 1,766.44, 2,437.58 and 980.46

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Solution

The fourth proportional to 1,766.44, 2,437.58 and 980.46 is: 1,352.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.44 : 2,437.58 = 980.46 : x
  2. Step 2: Convert to fraction form
    1,766.44/2,437.58 = 980.46/x
  3. Step 3: Cross multiply
    1,766.44x = 2,437.58 × 980.46
  4. Step 4: Simplify right side
    1,766.44x = 2,389,949.69
  5. Step 5: Solve for x
    x = 2,389,949.69/1,766.44
  6. Step 6: Final answer
    x = 1,352.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.