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Finding the Fourth Proportional to 414,060.40, 621,090.60 and 361,572.40

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Solution

The fourth proportional to 414,060.40, 621,090.60 and 361,572.40 is: 542,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,060.40 : 621,090.60 = 361,572.40 : x
  2. Step 2: Convert to fraction form
    414,060.40/621,090.60 = 361,572.40/x
  3. Step 3: Cross multiply
    414,060.40x = 621,090.60 × 361,572.40
  4. Step 4: Simplify right side
    414,060.40x = 224,569,218,859.44
  5. Step 5: Solve for x
    x = 224,569,218,859.44/414,060.40
  6. Step 6: Final answer
    x = 542,358.60

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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.