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Finding the Fourth Proportional to 72,952.94, 100,674.96 and 39,418.94

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Solution

The fourth proportional to 72,952.94, 100,674.96 and 39,418.94 is: 54,398.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,952.94 : 100,674.96 = 39,418.94 : x
  2. Step 2: Convert to fraction form
    72,952.94/100,674.96 = 39,418.94/x
  3. Step 3: Cross multiply
    72,952.94x = 100,674.96 × 39,418.94
  4. Step 4: Simplify right side
    72,952.94x = 3,968,500,207.74
  5. Step 5: Solve for x
    x = 3,968,500,207.74/72,952.94
  6. Step 6: Final answer
    x = 54,398.08

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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.