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Finding the Fourth Proportional to 40,657.70, 60,986.10 and 11,075.33

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Solution

The fourth proportional to 40,657.70, 60,986.10 and 11,075.33 is: 16,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,657.70 : 60,986.10 = 11,075.33 : x
  2. Step 2: Convert to fraction form
    40,657.70/60,986.10 = 11,075.33/x
  3. Step 3: Cross multiply
    40,657.70x = 60,986.10 × 11,075.33
  4. Step 4: Simplify right side
    40,657.70x = 675,441,182.91
  5. Step 5: Solve for x
    x = 675,441,182.91/40,657.70
  6. Step 6: Final answer
    x = 16,612.87

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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.