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Finding the Fourth Proportional to 65,722.94, 98,615.50 and 34,116.20

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Solution

The fourth proportional to 65,722.94, 98,615.50 and 34,116.20 is: 51,190.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,722.94 : 98,615.50 = 34,116.20 : x
  2. Step 2: Convert to fraction form
    65,722.94/98,615.50 = 34,116.20/x
  3. Step 3: Cross multiply
    65,722.94x = 98,615.50 × 34,116.20
  4. Step 4: Simplify right side
    65,722.94x = 3,364,386,121.10
  5. Step 5: Solve for x
    x = 3,364,386,121.10/65,722.94
  6. Step 6: Final answer
    x = 51,190.44

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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.