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Finding the Fourth Proportional to 10,853.92, 14,962.08 and 8,491.96

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Solution

The fourth proportional to 10,853.92, 14,962.08 and 8,491.96 is: 11,706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,853.92 : 14,962.08 = 8,491.96 : x
  2. Step 2: Convert to fraction form
    10,853.92/14,962.08 = 8,491.96/x
  3. Step 3: Cross multiply
    10,853.92x = 14,962.08 × 8,491.96
  4. Step 4: Simplify right side
    10,853.92x = 127,057,384.88
  5. Step 5: Solve for x
    x = 127,057,384.88/10,853.92
  6. Step 6: Final answer
    x = 11,706.13

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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.