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Finding the Fourth Proportional to 665,171.10, 997,659.45 and 191,807.10

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Solution

The fourth proportional to 665,171.10, 997,659.45 and 191,807.10 is: 287,682.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,171.10 : 997,659.45 = 191,807.10 : x
  2. Step 2: Convert to fraction form
    665,171.10/997,659.45 = 191,807.10/x
  3. Step 3: Cross multiply
    665,171.10x = 997,659.45 × 191,807.10
  4. Step 4: Simplify right side
    665,171.10x = 191,358,165,892.10
  5. Step 5: Solve for x
    x = 191,358,165,892.10/665,171.10
  6. Step 6: Final answer
    x = 287,682.62

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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.