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Finding the Fourth Proportional to 111,223.28, 153,457.56 and 63,459.44

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Solution

The fourth proportional to 111,223.28, 153,457.56 and 63,459.44 is: 87,556.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,223.28 : 153,457.56 = 63,459.44 : x
  2. Step 2: Convert to fraction form
    111,223.28/153,457.56 = 63,459.44/x
  3. Step 3: Cross multiply
    111,223.28x = 153,457.56 × 63,459.44
  4. Step 4: Simplify right side
    111,223.28x = 9,738,330,821.37
  5. Step 5: Solve for x
    x = 9,738,330,821.37/111,223.28
  6. Step 6: Final answer
    x = 87,556.59

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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.