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Finding the Fourth Proportional to 28,635, 39,533.58 and 18,716.28

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Solution

The fourth proportional to 28,635, 39,533.58 and 18,716.28 is: 25,839.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635 : 39,533.58 = 18,716.28 : x
  2. Step 2: Convert to fraction form
    28,635/39,533.58 = 18,716.28/x
  3. Step 3: Cross multiply
    28,635x = 39,533.58 × 18,716.28
  4. Step 4: Simplify right side
    28,635x = 739,921,552.68
  5. Step 5: Solve for x
    x = 739,921,552.68/28,635
  6. Step 6: Final answer
    x = 25,839.76

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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.