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Finding the Fourth Proportional to 539,040.72, 744,120.90 and 384,092.04

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Solution

The fourth proportional to 539,040.72, 744,120.90 and 384,092.04 is: 530,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,040.72 : 744,120.90 = 384,092.04 : x
  2. Step 2: Convert to fraction form
    539,040.72/744,120.90 = 384,092.04/x
  3. Step 3: Cross multiply
    539,040.72x = 744,120.90 × 384,092.04
  4. Step 4: Simplify right side
    539,040.72x = 285,810,914,487.64
  5. Step 5: Solve for x
    x = 285,810,914,487.64/539,040.72
  6. Step 6: Final answer
    x = 530,221.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.