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Finding the Fourth Proportional to 55,765.52, 76,529.55 and 55,371.86

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Solution

The fourth proportional to 55,765.52, 76,529.55 and 55,371.86 is: 75,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,765.52 : 76,529.55 = 55,371.86 : x
  2. Step 2: Convert to fraction form
    55,765.52/76,529.55 = 55,371.86/x
  3. Step 3: Cross multiply
    55,765.52x = 76,529.55 × 55,371.86
  4. Step 4: Simplify right side
    55,765.52x = 4,237,583,251.60
  5. Step 5: Solve for x
    x = 4,237,583,251.60/55,765.52
  6. Step 6: Final answer
    x = 75,989.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.