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Finding the Fourth Proportional to 14,885.98, 20,541.26 and 8,511.28

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Solution

The fourth proportional to 14,885.98, 20,541.26 and 8,511.28 is: 11,744.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,885.98 : 20,541.26 = 8,511.28 : x
  2. Step 2: Convert to fraction form
    14,885.98/20,541.26 = 8,511.28/x
  3. Step 3: Cross multiply
    14,885.98x = 20,541.26 × 8,511.28
  4. Step 4: Simplify right side
    14,885.98x = 174,832,415.41
  5. Step 5: Solve for x
    x = 174,832,415.41/14,885.98
  6. Step 6: Final answer
    x = 11,744.77

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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.