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Finding the Fourth Proportional to 281,740.74, 423,137.61 and 248,018.82

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Solution

The fourth proportional to 281,740.74, 423,137.61 and 248,018.82 is: 372,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,740.74 : 423,137.61 = 248,018.82 : x
  2. Step 2: Convert to fraction form
    281,740.74/423,137.61 = 248,018.82/x
  3. Step 3: Cross multiply
    281,740.74x = 423,137.61 × 248,018.82
  4. Step 4: Simplify right side
    281,740.74x = 104,946,090,729.82
  5. Step 5: Solve for x
    x = 104,946,090,729.82/281,740.74
  6. Step 6: Final answer
    x = 372,491.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.