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Finding the Fourth Proportional to 326,207.55, 489,193.94 and 112,917.51

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Solution

The fourth proportional to 326,207.55, 489,193.94 and 112,917.51 is: 169,335.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,207.55 : 489,193.94 = 112,917.51 : x
  2. Step 2: Convert to fraction form
    326,207.55/489,193.94 = 112,917.51/x
  3. Step 3: Cross multiply
    326,207.55x = 489,193.94 × 112,917.51
  4. Step 4: Simplify right side
    326,207.55x = 55,238,561,047.30
  5. Step 5: Solve for x
    x = 55,238,561,047.30/326,207.55
  6. Step 6: Final answer
    x = 169,335.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.