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Finding the Fourth Proportional to 413,742.80, 620,921.40 and 164,603.60

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Solution

The fourth proportional to 413,742.80, 620,921.40 and 164,603.60 is: 247,027.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,742.80 : 620,921.40 = 164,603.60 : x
  2. Step 2: Convert to fraction form
    413,742.80/620,921.40 = 164,603.60/x
  3. Step 3: Cross multiply
    413,742.80x = 620,921.40 × 164,603.60
  4. Step 4: Simplify right side
    413,742.80x = 102,205,897,757.04
  5. Step 5: Solve for x
    x = 102,205,897,757.04/413,742.80
  6. Step 6: Final answer
    x = 247,027.62

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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.