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Finding the Fourth Proportional to 146,779.92, 220,136.76 and 67,851

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Solution

The fourth proportional to 146,779.92, 220,136.76 and 67,851 is: 101,761.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,779.92 : 220,136.76 = 67,851 : x
  2. Step 2: Convert to fraction form
    146,779.92/220,136.76 = 67,851/x
  3. Step 3: Cross multiply
    146,779.92x = 220,136.76 × 67,851
  4. Step 4: Simplify right side
    146,779.92x = 14,936,499,302.76
  5. Step 5: Solve for x
    x = 14,936,499,302.76/146,779.92
  6. Step 6: Final answer
    x = 101,761.19

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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.