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Finding the Fourth Proportional to 28,839, 39,800.25 and 16,266.18

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Solution

The fourth proportional to 28,839, 39,800.25 and 16,266.18 is: 22,448.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,839 : 39,800.25 = 16,266.18 : x
  2. Step 2: Convert to fraction form
    28,839/39,800.25 = 16,266.18/x
  3. Step 3: Cross multiply
    28,839x = 39,800.25 × 16,266.18
  4. Step 4: Simplify right side
    28,839x = 647,398,030.55
  5. Step 5: Solve for x
    x = 647,398,030.55/28,839
  6. Step 6: Final answer
    x = 22,448.70

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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.