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Finding the Fourth Proportional to 1,766.48, 2,437.56 and 980.44

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Solution

The fourth proportional to 1,766.48, 2,437.56 and 980.44 is: 1,352.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.48 : 2,437.56 = 980.44 : x
  2. Step 2: Convert to fraction form
    1,766.48/2,437.56 = 980.44/x
  3. Step 3: Cross multiply
    1,766.48x = 2,437.56 × 980.44
  4. Step 4: Simplify right side
    1,766.48x = 2,389,875.23
  5. Step 5: Solve for x
    x = 2,389,875.23/1,766.48
  6. Step 6: Final answer
    x = 1,352.91

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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.