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Finding the Fourth Proportional to 65,983.86, 98,967.99 and 18,602.51

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Solution

The fourth proportional to 65,983.86, 98,967.99 and 18,602.51 is: 27,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,983.86 : 98,967.99 = 18,602.51 : x
  2. Step 2: Convert to fraction form
    65,983.86/98,967.99 = 18,602.51/x
  3. Step 3: Cross multiply
    65,983.86x = 98,967.99 × 18,602.51
  4. Step 4: Simplify right side
    65,983.86x = 1,841,052,528.81
  5. Step 5: Solve for x
    x = 1,841,052,528.81/65,983.86
  6. Step 6: Final answer
    x = 27,901.56

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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.