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Finding the Fourth Proportional to 539,379.17, 744,623.13 and 394,021.74

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Solution

The fourth proportional to 539,379.17, 744,623.13 and 394,021.74 is: 543,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,379.17 : 744,623.13 = 394,021.74 : x
  2. Step 2: Convert to fraction form
    539,379.17/744,623.13 = 394,021.74/x
  3. Step 3: Cross multiply
    539,379.17x = 744,623.13 × 394,021.74
  4. Step 4: Simplify right side
    539,379.17x = 293,397,699,356.74
  5. Step 5: Solve for x
    x = 293,397,699,356.74/539,379.17
  6. Step 6: Final answer
    x = 543,954.45

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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.