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Finding the Fourth Proportional to 111,898.44, 154,438.61 and 71,610.26

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Solution

The fourth proportional to 111,898.44, 154,438.61 and 71,610.26 is: 98,834.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,898.44 : 154,438.61 = 71,610.26 : x
  2. Step 2: Convert to fraction form
    111,898.44/154,438.61 = 71,610.26/x
  3. Step 3: Cross multiply
    111,898.44x = 154,438.61 × 71,610.26
  4. Step 4: Simplify right side
    111,898.44x = 11,059,387,885.89
  5. Step 5: Solve for x
    x = 11,059,387,885.89/111,898.44
  6. Step 6: Final answer
    x = 98,834.16

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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.