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Finding the Fourth Proportional to 107,959.35, 161,606.88 and 70,438.64

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Solution

The fourth proportional to 107,959.35, 161,606.88 and 70,438.64 is: 105,441.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,959.35 : 161,606.88 = 70,438.64 : x
  2. Step 2: Convert to fraction form
    107,959.35/161,606.88 = 70,438.64/x
  3. Step 3: Cross multiply
    107,959.35x = 161,606.88 × 70,438.64
  4. Step 4: Simplify right side
    107,959.35x = 11,383,367,736.65
  5. Step 5: Solve for x
    x = 11,383,367,736.65/107,959.35
  6. Step 6: Final answer
    x = 105,441.24

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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.