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Finding the Fourth Proportional to 18,228.94, 25,155.95 and 9,845.44

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Solution

The fourth proportional to 18,228.94, 25,155.95 and 9,845.44 is: 13,586.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,228.94 : 25,155.95 = 9,845.44 : x
  2. Step 2: Convert to fraction form
    18,228.94/25,155.95 = 9,845.44/x
  3. Step 3: Cross multiply
    18,228.94x = 25,155.95 × 9,845.44
  4. Step 4: Simplify right side
    18,228.94x = 247,671,284.25
  5. Step 5: Solve for x
    x = 247,671,284.25/18,228.94
  6. Step 6: Final answer
    x = 13,586.71

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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.