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Finding the Fourth Proportional to 171,905.80, 257,858.70 and 153,826.60

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Solution

The fourth proportional to 171,905.80, 257,858.70 and 153,826.60 is: 230,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,905.80 : 257,858.70 = 153,826.60 : x
  2. Step 2: Convert to fraction form
    171,905.80/257,858.70 = 153,826.60/x
  3. Step 3: Cross multiply
    171,905.80x = 257,858.70 × 153,826.60
  4. Step 4: Simplify right side
    171,905.80x = 39,665,527,101.42
  5. Step 5: Solve for x
    x = 39,665,527,101.42/171,905.80
  6. Step 6: Final answer
    x = 230,739.90

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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.