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Finding the Fourth Proportional to 28,441, 39,243.72 and 16,501.60

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Solution

The fourth proportional to 28,441, 39,243.72 and 16,501.60 is: 22,769.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,441 : 39,243.72 = 16,501.60 : x
  2. Step 2: Convert to fraction form
    28,441/39,243.72 = 16,501.60/x
  3. Step 3: Cross multiply
    28,441x = 39,243.72 × 16,501.60
  4. Step 4: Simplify right side
    28,441x = 647,584,169.95
  5. Step 5: Solve for x
    x = 647,584,169.95/28,441
  6. Step 6: Final answer
    x = 22,769.39

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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.