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Finding the Fourth Proportional to 88,603.20, 122,272.80 and 52,811.20

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Solution

The fourth proportional to 88,603.20, 122,272.80 and 52,811.20 is: 72,879.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,603.20 : 122,272.80 = 52,811.20 : x
  2. Step 2: Convert to fraction form
    88,603.20/122,272.80 = 52,811.20/x
  3. Step 3: Cross multiply
    88,603.20x = 122,272.80 × 52,811.20
  4. Step 4: Simplify right side
    88,603.20x = 6,457,373,295.36
  5. Step 5: Solve for x
    x = 6,457,373,295.36/88,603.20
  6. Step 6: Final answer
    x = 72,879.68

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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.