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Finding the Fourth Proportional to 55,603.21, 76,737.92 and 31,733.45

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Solution

The fourth proportional to 55,603.21, 76,737.92 and 31,733.45 is: 43,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,603.21 : 76,737.92 = 31,733.45 : x
  2. Step 2: Convert to fraction form
    55,603.21/76,737.92 = 31,733.45/x
  3. Step 3: Cross multiply
    55,603.21x = 76,737.92 × 31,733.45
  4. Step 4: Simplify right side
    55,603.21x = 2,435,158,980.60
  5. Step 5: Solve for x
    x = 2,435,158,980.60/55,603.21
  6. Step 6: Final answer
    x = 43,795.30

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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.