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Finding the Fourth Proportional to 326,207.51, 489,193.83 and 112,917.47

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Solution

The fourth proportional to 326,207.51, 489,193.83 and 112,917.47 is: 169,335.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,207.51 : 489,193.83 = 112,917.47 : x
  2. Step 2: Convert to fraction form
    326,207.51/489,193.83 = 112,917.47/x
  3. Step 3: Cross multiply
    326,207.51x = 489,193.83 × 112,917.47
  4. Step 4: Simplify right side
    326,207.51x = 55,238,529,623.21
  5. Step 5: Solve for x
    x = 55,238,529,623.21/326,207.51
  6. Step 6: Final answer
    x = 169,335.55

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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.