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Finding the Fourth Proportional to 260,968.01, 391,514.21 and 92,503.06

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Solution

The fourth proportional to 260,968.01, 391,514.21 and 92,503.06 is: 138,776.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,968.01 : 391,514.21 = 92,503.06 : x
  2. Step 2: Convert to fraction form
    260,968.01/391,514.21 = 92,503.06/x
  3. Step 3: Cross multiply
    260,968.01x = 391,514.21 × 92,503.06
  4. Step 4: Simplify right side
    260,968.01x = 36,216,262,458.48
  5. Step 5: Solve for x
    x = 36,216,262,458.48/260,968.01
  6. Step 6: Final answer
    x = 138,776.64

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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.