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Finding the Fourth Proportional to 79,041.20, 118,486.20 and 39,558.56

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Solution

The fourth proportional to 79,041.20, 118,486.20 and 39,558.56 is: 59,300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,041.20 : 118,486.20 = 39,558.56 : x
  2. Step 2: Convert to fraction form
    79,041.20/118,486.20 = 39,558.56/x
  3. Step 3: Cross multiply
    79,041.20x = 118,486.20 × 39,558.56
  4. Step 4: Simplify right side
    79,041.20x = 4,687,143,451.87
  5. Step 5: Solve for x
    x = 4,687,143,451.87/79,041.20
  6. Step 6: Final answer
    x = 59,300.00

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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.