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Finding the Fourth Proportional to 665,208.60, 997,715.70 and 191,844.60

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Solution

The fourth proportional to 665,208.60, 997,715.70 and 191,844.60 is: 287,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,208.60 : 997,715.70 = 191,844.60 : x
  2. Step 2: Convert to fraction form
    665,208.60/997,715.70 = 191,844.60/x
  3. Step 3: Cross multiply
    665,208.60x = 997,715.70 × 191,844.60
  4. Step 4: Simplify right side
    665,208.60x = 191,406,369,380.22
  5. Step 5: Solve for x
    x = 191,406,369,380.22/665,208.60
  6. Step 6: Final answer
    x = 287,738.87

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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.