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Finding the Fourth Proportional to 357,469.80, 536,046.30 and 120,748.20

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Solution

The fourth proportional to 357,469.80, 536,046.30 and 120,748.20 is: 181,068.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,469.80 : 536,046.30 = 120,748.20 : x
  2. Step 2: Convert to fraction form
    357,469.80/536,046.30 = 120,748.20/x
  3. Step 3: Cross multiply
    357,469.80x = 536,046.30 × 120,748.20
  4. Step 4: Simplify right side
    357,469.80x = 64,726,625,841.66
  5. Step 5: Solve for x
    x = 64,726,625,841.66/357,469.80
  6. Step 6: Final answer
    x = 181,068.79

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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.