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Finding the Fourth Proportional to 18,705.92, 25,814.08 and 10,748.64

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Solution

The fourth proportional to 18,705.92, 25,814.08 and 10,748.64 is: 14,833.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.92 : 25,814.08 = 10,748.64 : x
  2. Step 2: Convert to fraction form
    18,705.92/25,814.08 = 10,748.64/x
  3. Step 3: Cross multiply
    18,705.92x = 25,814.08 × 10,748.64
  4. Step 4: Simplify right side
    18,705.92x = 277,466,252.85
  5. Step 5: Solve for x
    x = 277,466,252.85/18,705.92
  6. Step 6: Final answer
    x = 14,833.07

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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.