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Finding the Fourth Proportional to 207,702.40, 311,116.20 and 168,336.40

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Solution

The fourth proportional to 207,702.40, 311,116.20 and 168,336.40 is: 252,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,702.40 : 311,116.20 = 168,336.40 : x
  2. Step 2: Convert to fraction form
    207,702.40/311,116.20 = 168,336.40/x
  3. Step 3: Cross multiply
    207,702.40x = 311,116.20 × 168,336.40
  4. Step 4: Simplify right side
    207,702.40x = 52,372,181,089.68
  5. Step 5: Solve for x
    x = 52,372,181,089.68/207,702.40
  6. Step 6: Final answer
    x = 252,150.10

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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.