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Finding the Fourth Proportional to 104,183.40, 156,056.40 and 86,687.40

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Solution

The fourth proportional to 104,183.40, 156,056.40 and 86,687.40 is: 129,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,183.40 : 156,056.40 = 86,687.40 : x
  2. Step 2: Convert to fraction form
    104,183.40/156,056.40 = 86,687.40/x
  3. Step 3: Cross multiply
    104,183.40x = 156,056.40 × 86,687.40
  4. Step 4: Simplify right side
    104,183.40x = 13,528,123,569.36
  5. Step 5: Solve for x
    x = 13,528,123,569.36/104,183.40
  6. Step 6: Final answer
    x = 129,849.13

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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.