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Finding the Fourth Proportional to 188,532.56, 260,172.60 and 103,648.88

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Solution

The fourth proportional to 188,532.56, 260,172.60 and 103,648.88 is: 143,034.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,532.56 : 260,172.60 = 103,648.88 : x
  2. Step 2: Convert to fraction form
    188,532.56/260,172.60 = 103,648.88/x
  3. Step 3: Cross multiply
    188,532.56x = 260,172.60 × 103,648.88
  4. Step 4: Simplify right side
    188,532.56x = 26,966,598,596.69
  5. Step 5: Solve for x
    x = 26,966,598,596.69/188,532.56
  6. Step 6: Final answer
    x = 143,034.17

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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.