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Finding the Fourth Proportional to 355,209.69, 532,355.26 and 265,761.39

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Solution

The fourth proportional to 355,209.69, 532,355.26 and 265,761.39 is: 398,298.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,209.69 : 532,355.26 = 265,761.39 : x
  2. Step 2: Convert to fraction form
    355,209.69/532,355.26 = 265,761.39/x
  3. Step 3: Cross multiply
    355,209.69x = 532,355.26 × 265,761.39
  4. Step 4: Simplify right side
    355,209.69x = 141,479,473,871.41
  5. Step 5: Solve for x
    x = 141,479,473,871.41/355,209.69
  6. Step 6: Final answer
    x = 398,298.46

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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.