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Finding the Fourth Proportional to 108,658.92, 163,020.90 and 73,262.16

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Solution

The fourth proportional to 108,658.92, 163,020.90 and 73,262.16 is: 109,915.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,658.92 : 163,020.90 = 73,262.16 : x
  2. Step 2: Convert to fraction form
    108,658.92/163,020.90 = 73,262.16/x
  3. Step 3: Cross multiply
    108,658.92x = 163,020.90 × 73,262.16
  4. Step 4: Simplify right side
    108,658.92x = 11,943,263,259.14
  5. Step 5: Solve for x
    x = 11,943,263,259.14/108,658.92
  6. Step 6: Final answer
    x = 109,915.17

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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.