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Finding the Fourth Proportional to 111,279.44, 153,481.86 and 77,287.97

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Solution

The fourth proportional to 111,279.44, 153,481.86 and 77,287.97 is: 106,599.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,279.44 : 153,481.86 = 77,287.97 : x
  2. Step 2: Convert to fraction form
    111,279.44/153,481.86 = 77,287.97/x
  3. Step 3: Cross multiply
    111,279.44x = 153,481.86 × 77,287.97
  4. Step 4: Simplify right side
    111,279.44x = 11,862,301,391.22
  5. Step 5: Solve for x
    x = 11,862,301,391.22/111,279.44
  6. Step 6: Final answer
    x = 106,599.22

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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.