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Finding the Fourth Proportional to 189,636.93, 261,751.10 and 117,974.21

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Solution

The fourth proportional to 189,636.93, 261,751.10 and 117,974.21 is: 162,836.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,636.93 : 261,751.10 = 117,974.21 : x
  2. Step 2: Convert to fraction form
    189,636.93/261,751.10 = 117,974.21/x
  3. Step 3: Cross multiply
    189,636.93x = 261,751.10 × 117,974.21
  4. Step 4: Simplify right side
    189,636.93x = 30,879,877,340.50
  5. Step 5: Solve for x
    x = 30,879,877,340.50/189,636.93
  6. Step 6: Final answer
    x = 162,836.83

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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.