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Finding the Fourth Proportional to 260,647.42, 391,003.32 and 92,133.01

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Solution

The fourth proportional to 260,647.42, 391,003.32 and 92,133.01 is: 138,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,647.42 : 391,003.32 = 92,133.01 : x
  2. Step 2: Convert to fraction form
    260,647.42/391,003.32 = 92,133.01/x
  3. Step 3: Cross multiply
    260,647.42x = 391,003.32 × 92,133.01
  4. Step 4: Simplify right side
    260,647.42x = 36,024,312,791.59
  5. Step 5: Solve for x
    x = 36,024,312,791.59/260,647.42
  6. Step 6: Final answer
    x = 138,210.89

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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.