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Finding the Fourth Proportional to 104,588.81, 156,817.60 and 69,012.39

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Solution

The fourth proportional to 104,588.81, 156,817.60 and 69,012.39 is: 103,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,588.81 : 156,817.60 = 69,012.39 : x
  2. Step 2: Convert to fraction form
    104,588.81/156,817.60 = 69,012.39/x
  3. Step 3: Cross multiply
    104,588.81x = 156,817.60 × 69,012.39
  4. Step 4: Simplify right side
    104,588.81x = 10,822,357,370.06
  5. Step 5: Solve for x
    x = 10,822,357,370.06/104,588.81
  6. Step 6: Final answer
    x = 103,475.29

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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.