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Finding the Fourth Proportional to 163,479.79, 225,622.26 and 91,858.25

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Solution

The fourth proportional to 163,479.79, 225,622.26 and 91,858.25 is: 126,775.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,479.79 : 225,622.26 = 91,858.25 : x
  2. Step 2: Convert to fraction form
    163,479.79/225,622.26 = 91,858.25/x
  3. Step 3: Cross multiply
    163,479.79x = 225,622.26 × 91,858.25
  4. Step 4: Simplify right side
    163,479.79x = 20,725,265,964.65
  5. Step 5: Solve for x
    x = 20,725,265,964.65/163,479.79
  6. Step 6: Final answer
    x = 126,775.71

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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.