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Finding the Fourth Proportional to 10,959.93, 16,415.28 and 8,487.27

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Solution

The fourth proportional to 10,959.93, 16,415.28 and 8,487.27 is: 12,711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.93 : 16,415.28 = 8,487.27 : x
  2. Step 2: Convert to fraction form
    10,959.93/16,415.28 = 8,487.27/x
  3. Step 3: Cross multiply
    10,959.93x = 16,415.28 × 8,487.27
  4. Step 4: Simplify right side
    10,959.93x = 139,320,913.49
  5. Step 5: Solve for x
    x = 139,320,913.49/10,959.93
  6. Step 6: Final answer
    x = 12,711.84

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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.