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Finding the Fourth Proportional to 577,512.79, 866,392.81 and 172,736.75

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Solution

The fourth proportional to 577,512.79, 866,392.81 and 172,736.75 is: 259,142.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,512.79 : 866,392.81 = 172,736.75 : x
  2. Step 2: Convert to fraction form
    577,512.79/866,392.81 = 172,736.75/x
  3. Step 3: Cross multiply
    577,512.79x = 866,392.81 × 172,736.75
  4. Step 4: Simplify right side
    577,512.79x = 149,657,879,956.91
  5. Step 5: Solve for x
    x = 149,657,879,956.91/577,512.79
  6. Step 6: Final answer
    x = 259,142.11

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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.