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Finding the Fourth Proportional to 103,725.80, 155,531.10 and 41,325.80

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Solution

The fourth proportional to 103,725.80, 155,531.10 and 41,325.80 is: 61,965.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,725.80 : 155,531.10 = 41,325.80 : x
  2. Step 2: Convert to fraction form
    103,725.80/155,531.10 = 41,325.80/x
  3. Step 3: Cross multiply
    103,725.80x = 155,531.10 × 41,325.80
  4. Step 4: Simplify right side
    103,725.80x = 6,427,447,132.38
  5. Step 5: Solve for x
    x = 6,427,447,132.38/103,725.80
  6. Step 6: Final answer
    x = 61,965.75

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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.