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Finding the Fourth Proportional to 171,378.80, 257,068.20 and 168,754.40

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Solution

The fourth proportional to 171,378.80, 257,068.20 and 168,754.40 is: 253,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,378.80 : 257,068.20 = 168,754.40 : x
  2. Step 2: Convert to fraction form
    171,378.80/257,068.20 = 168,754.40/x
  3. Step 3: Cross multiply
    171,378.80x = 257,068.20 × 168,754.40
  4. Step 4: Simplify right side
    171,378.80x = 43,381,389,850.08
  5. Step 5: Solve for x
    x = 43,381,389,850.08/171,378.80
  6. Step 6: Final answer
    x = 253,131.60

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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.