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Finding the Fourth Proportional to 434,128.71, 598,906.78 and 261,950.64

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Solution

The fourth proportional to 434,128.71, 598,906.78 and 261,950.64 is: 361,376.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,128.71 : 598,906.78 = 261,950.64 : x
  2. Step 2: Convert to fraction form
    434,128.71/598,906.78 = 261,950.64/x
  3. Step 3: Cross multiply
    434,128.71x = 598,906.78 × 261,950.64
  4. Step 4: Simplify right side
    434,128.71x = 156,884,011,420.56
  5. Step 5: Solve for x
    x = 156,884,011,420.56/434,128.71
  6. Step 6: Final answer
    x = 361,376.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.