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Finding the Fourth Proportional to 19,043.46, 28,507.55 and 17,288.46

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Solution

The fourth proportional to 19,043.46, 28,507.55 and 17,288.46 is: 25,880.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,043.46 : 28,507.55 = 17,288.46 : x
  2. Step 2: Convert to fraction form
    19,043.46/28,507.55 = 17,288.46/x
  3. Step 3: Cross multiply
    19,043.46x = 28,507.55 × 17,288.46
  4. Step 4: Simplify right side
    19,043.46x = 492,851,551.43
  5. Step 5: Solve for x
    x = 492,851,551.43/19,043.46
  6. Step 6: Final answer
    x = 25,880.36

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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.