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Finding the Fourth Proportional to 231,998.48, 347,999.77 and 91,757.12

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Solution

The fourth proportional to 231,998.48, 347,999.77 and 91,757.12 is: 137,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,998.48 : 347,999.77 = 91,757.12 : x
  2. Step 2: Convert to fraction form
    231,998.48/347,999.77 = 91,757.12/x
  3. Step 3: Cross multiply
    231,998.48x = 347,999.77 × 91,757.12
  4. Step 4: Simplify right side
    231,998.48x = 31,931,454,686.47
  5. Step 5: Solve for x
    x = 31,931,454,686.47/231,998.48
  6. Step 6: Final answer
    x = 137,636.49

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1.5x scale

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.