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Finding the Fourth Proportional to 2,041.68, 2,817.79 and 1,986.08

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Solution

The fourth proportional to 2,041.68, 2,817.79 and 1,986.08 is: 2,741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,041.68 : 2,817.79 = 1,986.08 : x
  2. Step 2: Convert to fraction form
    2,041.68/2,817.79 = 1,986.08/x
  3. Step 3: Cross multiply
    2,041.68x = 2,817.79 × 1,986.08
  4. Step 4: Simplify right side
    2,041.68x = 5,596,358.44
  5. Step 5: Solve for x
    x = 5,596,358.44/2,041.68
  6. Step 6: Final answer
    x = 2,741.06

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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.