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Finding the Fourth Proportional to 72,520.94, 108,736.75 and 25,125.01

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Solution

The fourth proportional to 72,520.94, 108,736.75 and 25,125.01 is: 37,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,520.94 : 108,736.75 = 25,125.01 : x
  2. Step 2: Convert to fraction form
    72,520.94/108,736.75 = 25,125.01/x
  3. Step 3: Cross multiply
    72,520.94x = 108,736.75 × 25,125.01
  4. Step 4: Simplify right side
    72,520.94x = 2,732,011,690.68
  5. Step 5: Solve for x
    x = 2,732,011,690.68/72,520.94
  6. Step 6: Final answer
    x = 37,672.04

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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.