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Finding the Fourth Proportional to 311,903.96, 430,427.61 and 168,664.10

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Solution

The fourth proportional to 311,903.96, 430,427.61 and 168,664.10 is: 232,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,903.96 : 430,427.61 = 168,664.10 : x
  2. Step 2: Convert to fraction form
    311,903.96/430,427.61 = 168,664.10/x
  3. Step 3: Cross multiply
    311,903.96x = 430,427.61 × 168,664.10
  4. Step 4: Simplify right side
    311,903.96x = 72,597,685,455.80
  5. Step 5: Solve for x
    x = 72,597,685,455.80/311,903.96
  6. Step 6: Final answer
    x = 232,756.54

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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.