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Finding the Fourth Proportional to 85,706.82, 128,596.11 and 37,650.64

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Solution

The fourth proportional to 85,706.82, 128,596.11 and 37,650.64 is: 56,491.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,706.82 : 128,596.11 = 37,650.64 : x
  2. Step 2: Convert to fraction form
    85,706.82/128,596.11 = 37,650.64/x
  3. Step 3: Cross multiply
    85,706.82x = 128,596.11 × 37,650.64
  4. Step 4: Simplify right side
    85,706.82x = 4,841,725,843.01
  5. Step 5: Solve for x
    x = 4,841,725,843.01/85,706.82
  6. Step 6: Final answer
    x = 56,491.72

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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.