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Finding the Fourth Proportional to 665,138.60, 997,545.90 and 191,774.60

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Solution

The fourth proportional to 665,138.60, 997,545.90 and 191,774.60 is: 287,615.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,138.60 : 997,545.90 = 191,774.60 : x
  2. Step 2: Convert to fraction form
    665,138.60/997,545.90 = 191,774.60/x
  3. Step 3: Cross multiply
    665,138.60x = 997,545.90 × 191,774.60
  4. Step 4: Simplify right side
    665,138.60x = 191,303,965,954.14
  5. Step 5: Solve for x
    x = 191,303,965,954.14/665,138.60
  6. Step 6: Final answer
    x = 287,615.19

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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.