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Finding the Fourth Proportional to 229,990.77, 344,987.37 and 80,232.30

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Solution

The fourth proportional to 229,990.77, 344,987.37 and 80,232.30 is: 120,348.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,990.77 : 344,987.37 = 80,232.30 : x
  2. Step 2: Convert to fraction form
    229,990.77/344,987.37 = 80,232.30/x
  3. Step 3: Cross multiply
    229,990.77x = 344,987.37 × 80,232.30
  4. Step 4: Simplify right side
    229,990.77x = 27,679,130,166.05
  5. Step 5: Solve for x
    x = 27,679,130,166.05/229,990.77
  6. Step 6: Final answer
    x = 120,348.87

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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.