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Finding the Fourth Proportional to 103,672.20, 155,393.10 and 44,497.80

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Solution

The fourth proportional to 103,672.20, 155,393.10 and 44,497.80 is: 66,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.20 : 155,393.10 = 44,497.80 : x
  2. Step 2: Convert to fraction form
    103,672.20/155,393.10 = 44,497.80/x
  3. Step 3: Cross multiply
    103,672.20x = 155,393.10 × 44,497.80
  4. Step 4: Simplify right side
    103,672.20x = 6,914,651,085.18
  5. Step 5: Solve for x
    x = 6,914,651,085.18/103,672.20
  6. Step 6: Final answer
    x = 66,697.25

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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.