Home / 65,986.78-98,989.08-19,239.25

Finding the Fourth Proportional to 65,986.78, 98,989.08 and 19,239.25

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Solution

The fourth proportional to 65,986.78, 98,989.08 and 19,239.25 is: 28,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,986.78 : 98,989.08 = 19,239.25 : x
  2. Step 2: Convert to fraction form
    65,986.78/98,989.08 = 19,239.25/x
  3. Step 3: Cross multiply
    65,986.78x = 98,989.08 × 19,239.25
  4. Step 4: Simplify right side
    65,986.78x = 1,904,475,657.39
  5. Step 5: Solve for x
    x = 1,904,475,657.39/65,986.78
  6. Step 6: Final answer
    x = 28,861.47

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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.