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Finding the Fourth Proportional to 468,761.12, 703,036.40 and 215,799.20

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Solution

The fourth proportional to 468,761.12, 703,036.40 and 215,799.20 is: 323,650.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,761.12 : 703,036.40 = 215,799.20 : x
  2. Step 2: Convert to fraction form
    468,761.12/703,036.40 = 215,799.20/x
  3. Step 3: Cross multiply
    468,761.12x = 703,036.40 × 215,799.20
  4. Step 4: Simplify right side
    468,761.12x = 151,714,692,690.88
  5. Step 5: Solve for x
    x = 151,714,692,690.88/468,761.12
  6. Step 6: Final answer
    x = 323,650.33

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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.