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Finding the Fourth Proportional to 481,050.78, 721,692.81 and 144,090.78

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Solution

The fourth proportional to 481,050.78, 721,692.81 and 144,090.78 is: 216,171.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,050.78 : 721,692.81 = 144,090.78 : x
  2. Step 2: Convert to fraction form
    481,050.78/721,692.81 = 144,090.78/x
  3. Step 3: Cross multiply
    481,050.78x = 721,692.81 × 144,090.78
  4. Step 4: Simplify right side
    481,050.78x = 103,989,279,913.29
  5. Step 5: Solve for x
    x = 103,989,279,913.29/481,050.78
  6. Step 6: Final answer
    x = 216,171.11

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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.