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Finding the Fourth Proportional to 18,636.48, 27,956.52 and 6,946.96

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Solution

The fourth proportional to 18,636.48, 27,956.52 and 6,946.96 is: 10,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.48 : 27,956.52 = 6,946.96 : x
  2. Step 2: Convert to fraction form
    18,636.48/27,956.52 = 6,946.96/x
  3. Step 3: Cross multiply
    18,636.48x = 27,956.52 × 6,946.96
  4. Step 4: Simplify right side
    18,636.48x = 194,212,826.18
  5. Step 5: Solve for x
    x = 194,212,826.18/18,636.48
  6. Step 6: Final answer
    x = 10,421.11

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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.