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Finding the Fourth Proportional to 18,425.84, 27,638.73 and 4,574.84

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Solution

The fourth proportional to 18,425.84, 27,638.73 and 4,574.84 is: 6,862.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.84 : 27,638.73 = 4,574.84 : x
  2. Step 2: Convert to fraction form
    18,425.84/27,638.73 = 4,574.84/x
  3. Step 3: Cross multiply
    18,425.84x = 27,638.73 × 4,574.84
  4. Step 4: Simplify right side
    18,425.84x = 126,442,629.36
  5. Step 5: Solve for x
    x = 126,442,629.36/18,425.84
  6. Step 6: Final answer
    x = 6,862.25

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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.