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Finding the Fourth Proportional to 72,603.35, 108,918.84 and 25,216.64

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Solution

The fourth proportional to 72,603.35, 108,918.84 and 25,216.64 is: 37,829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.35 : 108,918.84 = 25,216.64 : x
  2. Step 2: Convert to fraction form
    72,603.35/108,918.84 = 25,216.64/x
  3. Step 3: Cross multiply
    72,603.35x = 108,918.84 × 25,216.64
  4. Step 4: Simplify right side
    72,603.35x = 2,746,567,177.50
  5. Step 5: Solve for x
    x = 2,746,567,177.50/72,603.35
  6. Step 6: Final answer
    x = 37,829.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.