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Finding the Fourth Proportional to 111,256.97, 153,534.74 and 65,957.36

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Solution

The fourth proportional to 111,256.97, 153,534.74 and 65,957.36 is: 91,021.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,256.97 : 153,534.74 = 65,957.36 : x
  2. Step 2: Convert to fraction form
    111,256.97/153,534.74 = 65,957.36/x
  3. Step 3: Cross multiply
    111,256.97x = 153,534.74 × 65,957.36
  4. Step 4: Simplify right side
    111,256.97x = 10,126,745,021.23
  5. Step 5: Solve for x
    x = 10,126,745,021.23/111,256.97
  6. Step 6: Final answer
    x = 91,021.22

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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.