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Finding the Fourth Proportional to 76,797.39, 115,178.81 and 27,549.39

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Solution

The fourth proportional to 76,797.39, 115,178.81 and 27,549.39 is: 41,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,797.39 : 115,178.81 = 27,549.39 : x
  2. Step 2: Convert to fraction form
    76,797.39/115,178.81 = 27,549.39/x
  3. Step 3: Cross multiply
    76,797.39x = 115,178.81 × 27,549.39
  4. Step 4: Simplify right side
    76,797.39x = 3,173,105,818.68
  5. Step 5: Solve for x
    x = 3,173,105,818.68/76,797.39
  6. Step 6: Final answer
    x = 41,317.89

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1.5x scale

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.