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Finding the Fourth Proportional to 55,745.66, 76,943.76 and 34,512.86

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Solution

The fourth proportional to 55,745.66, 76,943.76 and 34,512.86 is: 47,636.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,745.66 : 76,943.76 = 34,512.86 : x
  2. Step 2: Convert to fraction form
    55,745.66/76,943.76 = 34,512.86/x
  3. Step 3: Cross multiply
    55,745.66x = 76,943.76 × 34,512.86
  4. Step 4: Simplify right side
    55,745.66x = 2,655,549,216.75
  5. Step 5: Solve for x
    x = 2,655,549,216.75/55,745.66
  6. Step 6: Final answer
    x = 47,636.88

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1.5x scale

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.