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Finding the Fourth Proportional to 112,169.73, 167,859.65 and 70,069.64

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Solution

The fourth proportional to 112,169.73, 167,859.65 and 70,069.64 is: 104,857.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,169.73 : 167,859.65 = 70,069.64 : x
  2. Step 2: Convert to fraction form
    112,169.73/167,859.65 = 70,069.64/x
  3. Step 3: Cross multiply
    112,169.73x = 167,859.65 × 70,069.64
  4. Step 4: Simplify right side
    112,169.73x = 11,761,864,056.38
  5. Step 5: Solve for x
    x = 11,761,864,056.38/112,169.73
  6. Step 6: Final answer
    x = 104,857.74

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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.