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Finding the Fourth Proportional to 611,083.96, 916,679.28 and 251,276.72

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Solution

The fourth proportional to 611,083.96, 916,679.28 and 251,276.72 is: 376,937.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,083.96 : 916,679.28 = 251,276.72 : x
  2. Step 2: Convert to fraction form
    611,083.96/916,679.28 = 251,276.72/x
  3. Step 3: Cross multiply
    611,083.96x = 916,679.28 × 251,276.72
  4. Step 4: Simplify right side
    611,083.96x = 230,340,162,770.36
  5. Step 5: Solve for x
    x = 230,340,162,770.36/611,083.96
  6. Step 6: Final answer
    x = 376,937.01

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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.