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Finding the Fourth Proportional to 91,855.80, 137,756.34 and 35,704.62

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Solution

The fourth proportional to 91,855.80, 137,756.34 and 35,704.62 is: 53,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,855.80 : 137,756.34 = 35,704.62 : x
  2. Step 2: Convert to fraction form
    91,855.80/137,756.34 = 35,704.62/x
  3. Step 3: Cross multiply
    91,855.80x = 137,756.34 × 35,704.62
  4. Step 4: Simplify right side
    91,855.80x = 4,918,537,772.29
  5. Step 5: Solve for x
    x = 4,918,537,772.29/91,855.80
  6. Step 6: Final answer
    x = 53,546.30

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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.