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Finding the Fourth Proportional to 72,599.75, 108,903.73 and 25,852.63

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Solution

The fourth proportional to 72,599.75, 108,903.73 and 25,852.63 is: 38,780.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,599.75 : 108,903.73 = 25,852.63 : x
  2. Step 2: Convert to fraction form
    72,599.75/108,903.73 = 25,852.63/x
  3. Step 3: Cross multiply
    72,599.75x = 108,903.73 × 25,852.63
  4. Step 4: Simplify right side
    72,599.75x = 2,815,447,837.31
  5. Step 5: Solve for x
    x = 2,815,447,837.31/72,599.75
  6. Step 6: Final answer
    x = 38,780.41

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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.