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Finding the Fourth Proportional to 326,035.71, 489,055.26 and 148,418.51

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Solution

The fourth proportional to 326,035.71, 489,055.26 and 148,418.51 is: 222,628.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,035.71 : 489,055.26 = 148,418.51 : x
  2. Step 2: Convert to fraction form
    326,035.71/489,055.26 = 148,418.51/x
  3. Step 3: Cross multiply
    326,035.71x = 489,055.26 × 148,418.51
  4. Step 4: Simplify right side
    326,035.71x = 72,584,850,551.59
  5. Step 5: Solve for x
    x = 72,584,850,551.59/326,035.71
  6. Step 6: Final answer
    x = 222,628.53

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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.