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Finding the Fourth Proportional to 118,290.36, 176,530.25 and 105,668.64

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Solution

The fourth proportional to 118,290.36, 176,530.25 and 105,668.64 is: 157,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,290.36 : 176,530.25 = 105,668.64 : x
  2. Step 2: Convert to fraction form
    118,290.36/176,530.25 = 105,668.64/x
  3. Step 3: Cross multiply
    118,290.36x = 176,530.25 × 105,668.64
  4. Step 4: Simplify right side
    118,290.36x = 18,653,711,436.36
  5. Step 5: Solve for x
    x = 18,653,711,436.36/118,290.36
  6. Step 6: Final answer
    x = 157,694.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.