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Finding the Fourth Proportional to 611,844.60, 917,611.38 and 191,163

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Solution

The fourth proportional to 611,844.60, 917,611.38 and 191,163 is: 286,695.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,844.60 : 917,611.38 = 191,163 : x
  2. Step 2: Convert to fraction form
    611,844.60/917,611.38 = 191,163/x
  3. Step 3: Cross multiply
    611,844.60x = 917,611.38 × 191,163
  4. Step 4: Simplify right side
    611,844.60x = 175,413,344,234.94
  5. Step 5: Solve for x
    x = 175,413,344,234.94/611,844.60
  6. Step 6: Final answer
    x = 286,695.91

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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.