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Finding the Fourth Proportional to 65,984.86, 98,969.49 and 18,603.51

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Solution

The fourth proportional to 65,984.86, 98,969.49 and 18,603.51 is: 27,903.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,984.86 : 98,969.49 = 18,603.51 : x
  2. Step 2: Convert to fraction form
    65,984.86/98,969.49 = 18,603.51/x
  3. Step 3: Cross multiply
    65,984.86x = 98,969.49 × 18,603.51
  4. Step 4: Simplify right side
    65,984.86x = 1,841,179,896.91
  5. Step 5: Solve for x
    x = 1,841,179,896.91/65,984.86
  6. Step 6: Final answer
    x = 27,903.07

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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.