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Finding the Fourth Proportional to 70,205.06, 96,883.63 and 39,989.97

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Solution

The fourth proportional to 70,205.06, 96,883.63 and 39,989.97 is: 55,186.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,205.06 : 96,883.63 = 39,989.97 : x
  2. Step 2: Convert to fraction form
    70,205.06/96,883.63 = 39,989.97/x
  3. Step 3: Cross multiply
    70,205.06x = 96,883.63 × 39,989.97
  4. Step 4: Simplify right side
    70,205.06x = 3,874,373,357.22
  5. Step 5: Solve for x
    x = 3,874,373,357.22/70,205.06
  6. Step 6: Final answer
    x = 55,186.52

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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.