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Finding the Fourth Proportional to 18,426.52, 25,428.64 and 10,043.02

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Solution

The fourth proportional to 18,426.52, 25,428.64 and 10,043.02 is: 13,859.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.52 : 25,428.64 = 10,043.02 : x
  2. Step 2: Convert to fraction form
    18,426.52/25,428.64 = 10,043.02/x
  3. Step 3: Cross multiply
    18,426.52x = 25,428.64 × 10,043.02
  4. Step 4: Simplify right side
    18,426.52x = 255,380,340.09
  5. Step 5: Solve for x
    x = 255,380,340.09/18,426.52
  6. Step 6: Final answer
    x = 13,859.39

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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.