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Finding the Fourth Proportional to 72,252.88, 99,709.68 and 43,574.02

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Solution

The fourth proportional to 72,252.88, 99,709.68 and 43,574.02 is: 60,132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,252.88 : 99,709.68 = 43,574.02 : x
  2. Step 2: Convert to fraction form
    72,252.88/99,709.68 = 43,574.02/x
  3. Step 3: Cross multiply
    72,252.88x = 99,709.68 × 43,574.02
  4. Step 4: Simplify right side
    72,252.88x = 4,344,751,504.64
  5. Step 5: Solve for x
    x = 4,344,751,504.64/72,252.88
  6. Step 6: Final answer
    x = 60,132.57

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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.