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Finding the Fourth Proportional to 91,857.80, 137,556.30 and 60,523.40

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Solution

The fourth proportional to 91,857.80, 137,556.30 and 60,523.40 is: 90,633.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,857.80 : 137,556.30 = 60,523.40 : x
  2. Step 2: Convert to fraction form
    91,857.80/137,556.30 = 60,523.40/x
  3. Step 3: Cross multiply
    91,857.80x = 137,556.30 × 60,523.40
  4. Step 4: Simplify right side
    91,857.80x = 8,325,374,967.42
  5. Step 5: Solve for x
    x = 8,325,374,967.42/91,857.80
  6. Step 6: Final answer
    x = 90,633.29

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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.