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Finding the Fourth Proportional to 72,038.99, 108,072.48 and 27,662.48

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Solution

The fourth proportional to 72,038.99, 108,072.48 and 27,662.48 is: 41,499.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,038.99 : 108,072.48 = 27,662.48 : x
  2. Step 2: Convert to fraction form
    72,038.99/108,072.48 = 27,662.48/x
  3. Step 3: Cross multiply
    72,038.99x = 108,072.48 × 27,662.48
  4. Step 4: Simplify right side
    72,038.99x = 2,989,552,276.19
  5. Step 5: Solve for x
    x = 2,989,552,276.19/72,038.99
  6. Step 6: Final answer
    x = 41,499.09

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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.