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Finding the Fourth Proportional to 45,653.80, 68,531.90 and 35,311.40

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Solution

The fourth proportional to 45,653.80, 68,531.90 and 35,311.40 is: 53,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,653.80 : 68,531.90 = 35,311.40 : x
  2. Step 2: Convert to fraction form
    45,653.80/68,531.90 = 35,311.40/x
  3. Step 3: Cross multiply
    45,653.80x = 68,531.90 × 35,311.40
  4. Step 4: Simplify right side
    45,653.80x = 2,419,957,333.66
  5. Step 5: Solve for x
    x = 2,419,957,333.66/45,653.80
  6. Step 6: Final answer
    x = 53,006.70

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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.