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Finding the Fourth Proportional to 311,860.33, 430,269.01 and 190,875.49

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Solution

The fourth proportional to 311,860.33, 430,269.01 and 190,875.49 is: 263,348.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,860.33 : 430,269.01 = 190,875.49 : x
  2. Step 2: Convert to fraction form
    311,860.33/430,269.01 = 190,875.49/x
  3. Step 3: Cross multiply
    311,860.33x = 430,269.01 × 190,875.49
  4. Step 4: Simplify right side
    311,860.33x = 82,127,808,115.56
  5. Step 5: Solve for x
    x = 82,127,808,115.56/311,860.33
  6. Step 6: Final answer
    x = 263,348.04

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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.