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Finding the Fourth Proportional to 664,376.60, 996,402.90 and 191,012.60

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Solution

The fourth proportional to 664,376.60, 996,402.90 and 191,012.60 is: 286,472.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,376.60 : 996,402.90 = 191,012.60 : x
  2. Step 2: Convert to fraction form
    664,376.60/996,402.90 = 191,012.60/x
  3. Step 3: Cross multiply
    664,376.60x = 996,402.90 × 191,012.60
  4. Step 4: Simplify right side
    664,376.60x = 190,325,508,576.54
  5. Step 5: Solve for x
    x = 190,325,508,576.54/664,376.60
  6. Step 6: Final answer
    x = 286,472.32

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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.