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Finding the Fourth Proportional to 359,494.20, 539,241.30 and 122,801.40

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Solution

The fourth proportional to 359,494.20, 539,241.30 and 122,801.40 is: 184,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,494.20 : 539,241.30 = 122,801.40 : x
  2. Step 2: Convert to fraction form
    359,494.20/539,241.30 = 122,801.40/x
  3. Step 3: Cross multiply
    359,494.20x = 539,241.30 × 122,801.40
  4. Step 4: Simplify right side
    359,494.20x = 66,219,586,577.82
  5. Step 5: Solve for x
    x = 66,219,586,577.82/359,494.20
  6. Step 6: Final answer
    x = 184,202.10

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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.