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Finding the Fourth Proportional to 144,822.60, 217,233.90 and 66,090.60

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Solution

The fourth proportional to 144,822.60, 217,233.90 and 66,090.60 is: 99,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,822.60 : 217,233.90 = 66,090.60 : x
  2. Step 2: Convert to fraction form
    144,822.60/217,233.90 = 66,090.60/x
  3. Step 3: Cross multiply
    144,822.60x = 217,233.90 × 66,090.60
  4. Step 4: Simplify right side
    144,822.60x = 14,357,118,791.34
  5. Step 5: Solve for x
    x = 14,357,118,791.34/144,822.60
  6. Step 6: Final answer
    x = 99,135.90

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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.