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Finding the Fourth Proportional to 70,611.40, 105,863.10 and 35,576.20

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Solution

The fourth proportional to 70,611.40, 105,863.10 and 35,576.20 is: 53,337.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,611.40 : 105,863.10 = 35,576.20 : x
  2. Step 2: Convert to fraction form
    70,611.40/105,863.10 = 35,576.20/x
  3. Step 3: Cross multiply
    70,611.40x = 105,863.10 × 35,576.20
  4. Step 4: Simplify right side
    70,611.40x = 3,766,206,818.22
  5. Step 5: Solve for x
    x = 3,766,206,818.22/70,611.40
  6. Step 6: Final answer
    x = 53,337.09

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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.