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Finding the Fourth Proportional to 56,786.79, 85,177.12 and 17,340.84

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Solution

The fourth proportional to 56,786.79, 85,177.12 and 17,340.84 is: 26,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,786.79 : 85,177.12 = 17,340.84 : x
  2. Step 2: Convert to fraction form
    56,786.79/85,177.12 = 17,340.84/x
  3. Step 3: Cross multiply
    56,786.79x = 85,177.12 × 17,340.84
  4. Step 4: Simplify right side
    56,786.79x = 1,477,042,809.58
  5. Step 5: Solve for x
    x = 1,477,042,809.58/56,786.79
  6. Step 6: Final answer
    x = 26,010.32

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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.