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Finding the Fourth Proportional to 65,448.73, 98,173.08 and 21,079.96

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Solution

The fourth proportional to 65,448.73, 98,173.08 and 21,079.96 is: 31,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,448.73 : 98,173.08 = 21,079.96 : x
  2. Step 2: Convert to fraction form
    65,448.73/98,173.08 = 21,079.96/x
  3. Step 3: Cross multiply
    65,448.73x = 98,173.08 × 21,079.96
  4. Step 4: Simplify right side
    65,448.73x = 2,069,484,599.48
  5. Step 5: Solve for x
    x = 2,069,484,599.48/65,448.73
  6. Step 6: Final answer
    x = 31,619.94

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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.