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Finding the Fourth Proportional to 171,914.70, 257,872.05 and 157,140.30

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Solution

The fourth proportional to 171,914.70, 257,872.05 and 157,140.30 is: 235,710.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,914.70 : 257,872.05 = 157,140.30 : x
  2. Step 2: Convert to fraction form
    171,914.70/257,872.05 = 157,140.30/x
  3. Step 3: Cross multiply
    171,914.70x = 257,872.05 × 157,140.30
  4. Step 4: Simplify right side
    171,914.70x = 40,522,091,298.62
  5. Step 5: Solve for x
    x = 40,522,091,298.62/171,914.70
  6. Step 6: Final answer
    x = 235,710.45

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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.