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Finding the Fourth Proportional to 611,194.36, 916,979.24 and 291,753.86

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Solution

The fourth proportional to 611,194.36, 916,979.24 and 291,753.86 is: 437,720.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,194.36 : 916,979.24 = 291,753.86 : x
  2. Step 2: Convert to fraction form
    611,194.36/916,979.24 = 291,753.86/x
  3. Step 3: Cross multiply
    611,194.36x = 916,979.24 × 291,753.86
  4. Step 4: Simplify right side
    611,194.36x = 267,532,232,809.87
  5. Step 5: Solve for x
    x = 267,532,232,809.87/611,194.36
  6. Step 6: Final answer
    x = 437,720.39

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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.