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Finding the Fourth Proportional to 111,668.39, 154,108.28 and 63,279.70

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Solution

The fourth proportional to 111,668.39, 154,108.28 and 63,279.70 is: 87,329.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,668.39 : 154,108.28 = 63,279.70 : x
  2. Step 2: Convert to fraction form
    111,668.39/154,108.28 = 63,279.70/x
  3. Step 3: Cross multiply
    111,668.39x = 154,108.28 × 63,279.70
  4. Step 4: Simplify right side
    111,668.39x = 9,751,925,725.92
  5. Step 5: Solve for x
    x = 9,751,925,725.92/111,668.39
  6. Step 6: Final answer
    x = 87,329.33

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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.