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Finding the Fourth Proportional to 528,296.37, 791,923.31 and 338,215.69

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Solution

The fourth proportional to 528,296.37, 791,923.31 and 338,215.69 is: 506,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,296.37 : 791,923.31 = 338,215.69 : x
  2. Step 2: Convert to fraction form
    528,296.37/791,923.31 = 338,215.69/x
  3. Step 3: Cross multiply
    528,296.37x = 791,923.31 × 338,215.69
  4. Step 4: Simplify right side
    528,296.37x = 267,840,888,718.73
  5. Step 5: Solve for x
    x = 267,840,888,718.73/528,296.37
  6. Step 6: Final answer
    x = 506,989.83

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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.