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Finding the Fourth Proportional to 545,864.10, 818,911.35 and 171,924.90

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Solution

The fourth proportional to 545,864.10, 818,911.35 and 171,924.90 is: 257,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,864.10 : 818,911.35 = 171,924.90 : x
  2. Step 2: Convert to fraction form
    545,864.10/818,911.35 = 171,924.90/x
  3. Step 3: Cross multiply
    545,864.10x = 818,911.35 × 171,924.90
  4. Step 4: Simplify right side
    545,864.10x = 140,791,251,957.62
  5. Step 5: Solve for x
    x = 140,791,251,957.62/545,864.10
  6. Step 6: Final answer
    x = 257,923.63

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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.