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Finding the Fourth Proportional to 56,983.92, 78,632.04 and 33,111.60

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Solution

The fourth proportional to 56,983.92, 78,632.04 and 33,111.60 is: 45,690.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,983.92 : 78,632.04 = 33,111.60 : x
  2. Step 2: Convert to fraction form
    56,983.92/78,632.04 = 33,111.60/x
  3. Step 3: Cross multiply
    56,983.92x = 78,632.04 × 33,111.60
  4. Step 4: Simplify right side
    56,983.92x = 2,603,632,655.66
  5. Step 5: Solve for x
    x = 2,603,632,655.66/56,983.92
  6. Step 6: Final answer
    x = 45,690.66

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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.