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Finding the Fourth Proportional to 611,181.79, 916,960.41 and 291,741.28

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Solution

The fourth proportional to 611,181.79, 916,960.41 and 291,741.28 is: 437,701.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,181.79 : 916,960.41 = 291,741.28 : x
  2. Step 2: Convert to fraction form
    611,181.79/916,960.41 = 291,741.28/x
  3. Step 3: Cross multiply
    611,181.79x = 916,960.41 × 291,741.28
  4. Step 4: Simplify right side
    611,181.79x = 267,515,203,722.73
  5. Step 5: Solve for x
    x = 267,515,203,722.73/611,181.79
  6. Step 6: Final answer
    x = 437,701.53

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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.