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Finding the Fourth Proportional to 76,953.20, 115,246.20 and 37,383.20

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Solution

The fourth proportional to 76,953.20, 115,246.20 and 37,383.20 is: 55,985.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,953.20 : 115,246.20 = 37,383.20 : x
  2. Step 2: Convert to fraction form
    76,953.20/115,246.20 = 37,383.20/x
  3. Step 3: Cross multiply
    76,953.20x = 115,246.20 × 37,383.20
  4. Step 4: Simplify right side
    76,953.20x = 4,308,271,743.84
  5. Step 5: Solve for x
    x = 4,308,271,743.84/76,953.20
  6. Step 6: Final answer
    x = 55,985.61

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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.