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Finding the Fourth Proportional to 79,000.52, 109,021.07 and 43,190.53

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Solution

The fourth proportional to 79,000.52, 109,021.07 and 43,190.53 is: 59,603.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,000.52 : 109,021.07 = 43,190.53 : x
  2. Step 2: Convert to fraction form
    79,000.52/109,021.07 = 43,190.53/x
  3. Step 3: Cross multiply
    79,000.52x = 109,021.07 × 43,190.53
  4. Step 4: Simplify right side
    79,000.52x = 4,708,677,629.89
  5. Step 5: Solve for x
    x = 4,708,677,629.89/79,000.52
  6. Step 6: Final answer
    x = 59,603.13

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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.