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Finding the Fourth Proportional to 175,712.80, 263,504.40 and 86,936.80

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Solution

The fourth proportional to 175,712.80, 263,504.40 and 86,936.80 is: 130,373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,712.80 : 263,504.40 = 86,936.80 : x
  2. Step 2: Convert to fraction form
    175,712.80/263,504.40 = 86,936.80/x
  3. Step 3: Cross multiply
    175,712.80x = 263,504.40 × 86,936.80
  4. Step 4: Simplify right side
    175,712.80x = 22,908,229,321.92
  5. Step 5: Solve for x
    x = 22,908,229,321.92/175,712.80
  6. Step 6: Final answer
    x = 130,373.14

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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.