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Finding the Fourth Proportional to 384,782.70, 577,465.65 and 251,618.70

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Solution

The fourth proportional to 384,782.70, 577,465.65 and 251,618.70 is: 377,618.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,782.70 : 577,465.65 = 251,618.70 : x
  2. Step 2: Convert to fraction form
    384,782.70/577,465.65 = 251,618.70/x
  3. Step 3: Cross multiply
    384,782.70x = 577,465.65 × 251,618.70
  4. Step 4: Simplify right side
    384,782.70x = 145,301,156,147.66
  5. Step 5: Solve for x
    x = 145,301,156,147.66/384,782.70
  6. Step 6: Final answer
    x = 377,618.73

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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.