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Finding the Fourth Proportional to 188,459.64, 260,074.44 and 103,576.68

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Solution

The fourth proportional to 188,459.64, 260,074.44 and 103,576.68 is: 142,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,459.64 : 260,074.44 = 103,576.68 : x
  2. Step 2: Convert to fraction form
    188,459.64/260,074.44 = 103,576.68/x
  3. Step 3: Cross multiply
    188,459.64x = 260,074.44 × 103,576.68
  4. Step 4: Simplify right side
    188,459.64x = 26,937,647,048.06
  5. Step 5: Solve for x
    x = 26,937,647,048.06/188,459.64
  6. Step 6: Final answer
    x = 142,935.89

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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.