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Finding the Fourth Proportional to 578,143.62, 866,717.04 and 223,406.55

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Solution

The fourth proportional to 578,143.62, 866,717.04 and 223,406.55 is: 334,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,143.62 : 866,717.04 = 223,406.55 : x
  2. Step 2: Convert to fraction form
    578,143.62/866,717.04 = 223,406.55/x
  3. Step 3: Cross multiply
    578,143.62x = 866,717.04 × 223,406.55
  4. Step 4: Simplify right side
    578,143.62x = 193,630,263,732.61
  5. Step 5: Solve for x
    x = 193,630,263,732.61/578,143.62
  6. Step 6: Final answer
    x = 334,917.24

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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.