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Finding the Fourth Proportional to 34,928.74, 48,270.09 and 31,040.74

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Solution

The fourth proportional to 34,928.74, 48,270.09 and 31,040.74 is: 42,897.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,928.74 : 48,270.09 = 31,040.74 : x
  2. Step 2: Convert to fraction form
    34,928.74/48,270.09 = 31,040.74/x
  3. Step 3: Cross multiply
    34,928.74x = 48,270.09 × 31,040.74
  4. Step 4: Simplify right side
    34,928.74x = 1,498,339,313.47
  5. Step 5: Solve for x
    x = 1,498,339,313.47/34,928.74
  6. Step 6: Final answer
    x = 42,897.03

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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.