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Finding the Fourth Proportional to 398,861.63, 597,956.85 and 185,521.13

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Solution

The fourth proportional to 398,861.63, 597,956.85 and 185,521.13 is: 278,125.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,861.63 : 597,956.85 = 185,521.13 : x
  2. Step 2: Convert to fraction form
    398,861.63/597,956.85 = 185,521.13/x
  3. Step 3: Cross multiply
    398,861.63x = 597,956.85 × 185,521.13
  4. Step 4: Simplify right side
    398,861.63x = 110,933,630,503.24
  5. Step 5: Solve for x
    x = 110,933,630,503.24/398,861.63
  6. Step 6: Final answer
    x = 278,125.60

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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.