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Finding the Fourth Proportional to 144,940.60, 217,410.90 and 89,644.60

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Solution

The fourth proportional to 144,940.60, 217,410.90 and 89,644.60 is: 134,466.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,940.60 : 217,410.90 = 89,644.60 : x
  2. Step 2: Convert to fraction form
    144,940.60/217,410.90 = 89,644.60/x
  3. Step 3: Cross multiply
    144,940.60x = 217,410.90 × 89,644.60
  4. Step 4: Simplify right side
    144,940.60x = 19,489,713,166.14
  5. Step 5: Solve for x
    x = 19,489,713,166.14/144,940.60
  6. Step 6: Final answer
    x = 134,466.90

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1.5x scale

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.