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Finding the Fourth Proportional to 16,649.55, 24,978.92 and 10,728.45

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Solution

The fourth proportional to 16,649.55, 24,978.92 and 10,728.45 is: 16,095.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,649.55 : 24,978.92 = 10,728.45 : x
  2. Step 2: Convert to fraction form
    16,649.55/24,978.92 = 10,728.45/x
  3. Step 3: Cross multiply
    16,649.55x = 24,978.92 × 10,728.45
  4. Step 4: Simplify right side
    16,649.55x = 267,985,040.63
  5. Step 5: Solve for x
    x = 267,985,040.63/16,649.55
  6. Step 6: Final answer
    x = 16,095.63

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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.