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Finding the Fourth Proportional to 1,468.60, 2,191.19 and 1,276.60

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Solution

The fourth proportional to 1,468.60, 2,191.19 and 1,276.60 is: 1,904.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,468.60 : 2,191.19 = 1,276.60 : x
  2. Step 2: Convert to fraction form
    1,468.60/2,191.19 = 1,276.60/x
  3. Step 3: Cross multiply
    1,468.60x = 2,191.19 × 1,276.60
  4. Step 4: Simplify right side
    1,468.60x = 2,797,273.15
  5. Step 5: Solve for x
    x = 2,797,273.15/1,468.60
  6. Step 6: Final answer
    x = 1,904.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.