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Finding the Fourth Proportional to 74,605, 111,907.50 and 22,013.74

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Solution

The fourth proportional to 74,605, 111,907.50 and 22,013.74 is: 33,020.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,605 : 111,907.50 = 22,013.74 : x
  2. Step 2: Convert to fraction form
    74,605/111,907.50 = 22,013.74/x
  3. Step 3: Cross multiply
    74,605x = 111,907.50 × 22,013.74
  4. Step 4: Simplify right side
    74,605x = 2,463,502,609.05
  5. Step 5: Solve for x
    x = 2,463,502,609.05/74,605
  6. Step 6: Final answer
    x = 33,020.61

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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.