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Finding the Fourth Proportional to 72,961.37, 100,686.52 and 41,130.03

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Solution

The fourth proportional to 72,961.37, 100,686.52 and 41,130.03 is: 56,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,961.37 : 100,686.52 = 41,130.03 : x
  2. Step 2: Convert to fraction form
    72,961.37/100,686.52 = 41,130.03/x
  3. Step 3: Cross multiply
    72,961.37x = 100,686.52 × 41,130.03
  4. Step 4: Simplify right side
    72,961.37x = 4,141,239,588.20
  5. Step 5: Solve for x
    x = 4,141,239,588.20/72,961.37
  6. Step 6: Final answer
    x = 56,759.35

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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.