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Finding the Fourth Proportional to 96,765.40, 144,953.70 and 67,216.60

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Solution

The fourth proportional to 96,765.40, 144,953.70 and 67,216.60 is: 100,689.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,765.40 : 144,953.70 = 67,216.60 : x
  2. Step 2: Convert to fraction form
    96,765.40/144,953.70 = 67,216.60/x
  3. Step 3: Cross multiply
    96,765.40x = 144,953.70 × 67,216.60
  4. Step 4: Simplify right side
    96,765.40x = 9,743,294,871.42
  5. Step 5: Solve for x
    x = 9,743,294,871.42/96,765.40
  6. Step 6: Final answer
    x = 100,689.86

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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.