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Finding the Fourth Proportional to 77,304.51, 115,958.66 and 43,785.09

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Solution

The fourth proportional to 77,304.51, 115,958.66 and 43,785.09 is: 65,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,304.51 : 115,958.66 = 43,785.09 : x
  2. Step 2: Convert to fraction form
    77,304.51/115,958.66 = 43,785.09/x
  3. Step 3: Cross multiply
    77,304.51x = 115,958.66 × 43,785.09
  4. Step 4: Simplify right side
    77,304.51x = 5,077,260,145.45
  5. Step 5: Solve for x
    x = 5,077,260,145.45/77,304.51
  6. Step 6: Final answer
    x = 65,678.71

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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.