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Finding the Fourth Proportional to 28,296, 39,052.80 and 17,124.48

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Solution

The fourth proportional to 28,296, 39,052.80 and 17,124.48 is: 23,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296 : 39,052.80 = 17,124.48 : x
  2. Step 2: Convert to fraction form
    28,296/39,052.80 = 17,124.48/x
  3. Step 3: Cross multiply
    28,296x = 39,052.80 × 17,124.48
  4. Step 4: Simplify right side
    28,296x = 668,758,892.54
  5. Step 5: Solve for x
    x = 668,758,892.54/28,296
  6. Step 6: Final answer
    x = 23,634.40

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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.