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Finding the Fourth Proportional to 70,205.77, 96,872.74 and 39,991.67

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Solution

The fourth proportional to 70,205.77, 96,872.74 and 39,991.67 is: 55,182.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,205.77 : 96,872.74 = 39,991.67 : x
  2. Step 2: Convert to fraction form
    70,205.77/96,872.74 = 39,991.67/x
  3. Step 3: Cross multiply
    70,205.77x = 96,872.74 × 39,991.67
  4. Step 4: Simplify right side
    70,205.77x = 3,874,102,650.08
  5. Step 5: Solve for x
    x = 3,874,102,650.08/70,205.77
  6. Step 6: Final answer
    x = 55,182.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.