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Finding the Fourth Proportional to 260,364.51, 390,577.55 and 91,849.68

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Solution

The fourth proportional to 260,364.51, 390,577.55 and 91,849.68 is: 137,785.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,364.51 : 390,577.55 = 91,849.68 : x
  2. Step 2: Convert to fraction form
    260,364.51/390,577.55 = 91,849.68/x
  3. Step 3: Cross multiply
    260,364.51x = 390,577.55 × 91,849.68
  4. Step 4: Simplify right side
    260,364.51x = 35,874,422,523.44
  5. Step 5: Solve for x
    x = 35,874,422,523.44/260,364.51
  6. Step 6: Final answer
    x = 137,785.38

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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.