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Finding the Fourth Proportional to 74,764.69, 112,127.92 and 22,161.90

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Solution

The fourth proportional to 74,764.69, 112,127.92 and 22,161.90 is: 33,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,764.69 : 112,127.92 = 22,161.90 : x
  2. Step 2: Convert to fraction form
    74,764.69/112,127.92 = 22,161.90/x
  3. Step 3: Cross multiply
    74,764.69x = 112,127.92 × 22,161.90
  4. Step 4: Simplify right side
    74,764.69x = 2,484,967,750.25
  5. Step 5: Solve for x
    x = 2,484,967,750.25/74,764.69
  6. Step 6: Final answer
    x = 33,237.18

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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.