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Finding the Fourth Proportional to 72,605.76, 108,718.56 and 47,567.04

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Solution

The fourth proportional to 72,605.76, 108,718.56 and 47,567.04 is: 71,226.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.76 : 108,718.56 = 47,567.04 : x
  2. Step 2: Convert to fraction form
    72,605.76/108,718.56 = 47,567.04/x
  3. Step 3: Cross multiply
    72,605.76x = 108,718.56 × 47,567.04
  4. Step 4: Simplify right side
    72,605.76x = 5,171,420,092.26
  5. Step 5: Solve for x
    x = 5,171,420,092.26/72,605.76
  6. Step 6: Final answer
    x = 71,226.03

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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.