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Finding the Fourth Proportional to 258,115.76, 356,245.37 and 193,031.10

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Solution

The fourth proportional to 258,115.76, 356,245.37 and 193,031.10 is: 266,417.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,115.76 : 356,245.37 = 193,031.10 : x
  2. Step 2: Convert to fraction form
    258,115.76/356,245.37 = 193,031.10/x
  3. Step 3: Cross multiply
    258,115.76x = 356,245.37 × 193,031.10
  4. Step 4: Simplify right side
    258,115.76x = 68,766,436,485.52
  5. Step 5: Solve for x
    x = 68,766,436,485.52/258,115.76
  6. Step 6: Final answer
    x = 266,417.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.