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Finding the Fourth Proportional to 123,328.68, 185,003.76 and 43,359.84

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Solution

The fourth proportional to 123,328.68, 185,003.76 and 43,359.84 is: 65,043.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,328.68 : 185,003.76 = 43,359.84 : x
  2. Step 2: Convert to fraction form
    123,328.68/185,003.76 = 43,359.84/x
  3. Step 3: Cross multiply
    123,328.68x = 185,003.76 × 43,359.84
  4. Step 4: Simplify right side
    123,328.68x = 8,021,733,433.00
  5. Step 5: Solve for x
    x = 8,021,733,433.00/123,328.68
  6. Step 6: Final answer
    x = 65,043.54

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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.