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Finding the Fourth Proportional to 136,506.80, 188,495.70 and 85,605.14

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Solution

The fourth proportional to 136,506.80, 188,495.70 and 85,605.14 is: 118,208.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,506.80 : 188,495.70 = 85,605.14 : x
  2. Step 2: Convert to fraction form
    136,506.80/188,495.70 = 85,605.14/x
  3. Step 3: Cross multiply
    136,506.80x = 188,495.70 × 85,605.14
  4. Step 4: Simplify right side
    136,506.80x = 16,136,200,787.90
  5. Step 5: Solve for x
    x = 16,136,200,787.90/136,506.80
  6. Step 6: Final answer
    x = 118,208.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.