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Finding the Fourth Proportional to 38,487.49, 53,149.42 and 36,390.82

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Solution

The fourth proportional to 38,487.49, 53,149.42 and 36,390.82 is: 50,254.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,487.49 : 53,149.42 = 36,390.82 : x
  2. Step 2: Convert to fraction form
    38,487.49/53,149.42 = 36,390.82/x
  3. Step 3: Cross multiply
    38,487.49x = 53,149.42 × 36,390.82
  4. Step 4: Simplify right side
    38,487.49x = 1,934,150,976.32
  5. Step 5: Solve for x
    x = 1,934,150,976.32/38,487.49
  6. Step 6: Final answer
    x = 50,254.02

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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.