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Finding the Fourth Proportional to 55,756.70, 76,909.24 and 33,079.64

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Solution

The fourth proportional to 55,756.70, 76,909.24 and 33,079.64 is: 45,629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,756.70 : 76,909.24 = 33,079.64 : x
  2. Step 2: Convert to fraction form
    55,756.70/76,909.24 = 33,079.64/x
  3. Step 3: Cross multiply
    55,756.70x = 76,909.24 × 33,079.64
  4. Step 4: Simplify right side
    55,756.70x = 2,544,129,971.87
  5. Step 5: Solve for x
    x = 2,544,129,971.87/55,756.70
  6. Step 6: Final answer
    x = 45,629.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.