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Finding the Fourth Proportional to 43,998.20, 65,964.90 and 19,017.80

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Solution

The fourth proportional to 43,998.20, 65,964.90 and 19,017.80 is: 28,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,998.20 : 65,964.90 = 19,017.80 : x
  2. Step 2: Convert to fraction form
    43,998.20/65,964.90 = 19,017.80/x
  3. Step 3: Cross multiply
    43,998.20x = 65,964.90 × 19,017.80
  4. Step 4: Simplify right side
    43,998.20x = 1,254,507,275.22
  5. Step 5: Solve for x
    x = 1,254,507,275.22/43,998.20
  6. Step 6: Final answer
    x = 28,512.70

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1.5x scale

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.