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Finding the Fourth Proportional to 79,586.25, 109,826.70 and 43,776.25

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Solution

The fourth proportional to 79,586.25, 109,826.70 and 43,776.25 is: 60,409.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,586.25 : 109,826.70 = 43,776.25 : x
  2. Step 2: Convert to fraction form
    79,586.25/109,826.70 = 43,776.25/x
  3. Step 3: Cross multiply
    79,586.25x = 109,826.70 × 43,776.25
  4. Step 4: Simplify right side
    79,586.25x = 4,807,801,075.88
  5. Step 5: Solve for x
    x = 4,807,801,075.88/79,586.25
  6. Step 6: Final answer
    x = 60,409.95

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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.