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Finding the Fourth Proportional to 28,657.99, 42,986.76 and 15,593.41

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Solution

The fourth proportional to 28,657.99, 42,986.76 and 15,593.41 is: 23,389.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.99 : 42,986.76 = 15,593.41 : x
  2. Step 2: Convert to fraction form
    28,657.99/42,986.76 = 15,593.41/x
  3. Step 3: Cross multiply
    28,657.99x = 42,986.76 × 15,593.41
  4. Step 4: Simplify right side
    28,657.99x = 670,310,173.25
  5. Step 5: Solve for x
    x = 670,310,173.25/28,657.99
  6. Step 6: Final answer
    x = 23,389.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.