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Finding the Fourth Proportional to 79,009.85, 109,032.85 and 43,199.48

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Solution

The fourth proportional to 79,009.85, 109,032.85 and 43,199.48 is: 59,614.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,009.85 : 109,032.85 = 43,199.48 : x
  2. Step 2: Convert to fraction form
    79,009.85/109,032.85 = 43,199.48/x
  3. Step 3: Cross multiply
    79,009.85x = 109,032.85 × 43,199.48
  4. Step 4: Simplify right side
    79,009.85x = 4,710,162,749.50
  5. Step 5: Solve for x
    x = 4,710,162,749.50/79,009.85
  6. Step 6: Final answer
    x = 59,614.88

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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.