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Finding the Fourth Proportional to 719,257.88, 992,570.98 and 396,967.97

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Solution

The fourth proportional to 719,257.88, 992,570.98 and 396,967.97 is: 547,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,257.88 : 992,570.98 = 396,967.97 : x
  2. Step 2: Convert to fraction form
    719,257.88/992,570.98 = 396,967.97/x
  3. Step 3: Cross multiply
    719,257.88x = 992,570.98 × 396,967.97
  4. Step 4: Simplify right side
    719,257.88x = 394,018,880,063.82
  5. Step 5: Solve for x
    x = 394,018,880,063.82/719,257.88
  6. Step 6: Final answer
    x = 547,813.09

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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.