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Finding the Fourth Proportional to 520,690.16, 781,105.10 and 183,651.59

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Solution

The fourth proportional to 520,690.16, 781,105.10 and 183,651.59 is: 275,502.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,690.16 : 781,105.10 = 183,651.59 : x
  2. Step 2: Convert to fraction form
    520,690.16/781,105.10 = 183,651.59/x
  3. Step 3: Cross multiply
    520,690.16x = 781,105.10 × 183,651.59
  4. Step 4: Simplify right side
    520,690.16x = 143,451,188,748.33
  5. Step 5: Solve for x
    x = 143,451,188,748.33/520,690.16
  6. Step 6: Final answer
    x = 275,502.02

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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.