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Finding the Fourth Proportional to 538,666.39, 743,336.84 and 293,645.85

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Solution

The fourth proportional to 538,666.39, 743,336.84 and 293,645.85 is: 405,218.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,666.39 : 743,336.84 = 293,645.85 : x
  2. Step 2: Convert to fraction form
    538,666.39/743,336.84 = 293,645.85/x
  3. Step 3: Cross multiply
    538,666.39x = 743,336.84 × 293,645.85
  4. Step 4: Simplify right side
    538,666.39x = 218,277,778,218.11
  5. Step 5: Solve for x
    x = 218,277,778,218.11/538,666.39
  6. Step 6: Final answer
    x = 405,218.86

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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.