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Finding the Fourth Proportional to 79,093.55, 109,149.11 and 43,283.58

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Solution

The fourth proportional to 79,093.55, 109,149.11 and 43,283.58 is: 59,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,093.55 : 109,149.11 = 43,283.58 : x
  2. Step 2: Convert to fraction form
    79,093.55/109,149.11 = 43,283.58/x
  3. Step 3: Cross multiply
    79,093.55x = 109,149.11 × 43,283.58
  4. Step 4: Simplify right side
    79,093.55x = 4,724,364,018.20
  5. Step 5: Solve for x
    x = 4,724,364,018.20/79,093.55
  6. Step 6: Final answer
    x = 59,731.35

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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.