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Finding the Fourth Proportional to 74,607.76, 111,911.91 and 30,235.33

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Solution

The fourth proportional to 74,607.76, 111,911.91 and 30,235.33 is: 45,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,607.76 : 111,911.91 = 30,235.33 : x
  2. Step 2: Convert to fraction form
    74,607.76/111,911.91 = 30,235.33/x
  3. Step 3: Cross multiply
    74,607.76x = 111,911.91 × 30,235.33
  4. Step 4: Simplify right side
    74,607.76x = 3,383,693,529.78
  5. Step 5: Solve for x
    x = 3,383,693,529.78/74,607.76
  6. Step 6: Final answer
    x = 45,353.10

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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.