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Finding the Fourth Proportional to 545,234.64, 817,981.29 and 171,257.64

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Solution

The fourth proportional to 545,234.64, 817,981.29 and 171,257.64 is: 256,927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,234.64 : 817,981.29 = 171,257.64 : x
  2. Step 2: Convert to fraction form
    545,234.64/817,981.29 = 171,257.64/x
  3. Step 3: Cross multiply
    545,234.64x = 817,981.29 × 171,257.64
  4. Step 4: Simplify right side
    545,234.64x = 140,085,545,289.56
  5. Step 5: Solve for x
    x = 140,085,545,289.56/545,234.64
  6. Step 6: Final answer
    x = 256,927.08

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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.