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Finding the Fourth Proportional to 665,124.60, 997,589.70 and 191,760.60

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Solution

The fourth proportional to 665,124.60, 997,589.70 and 191,760.60 is: 287,612.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,124.60 : 997,589.70 = 191,760.60 : x
  2. Step 2: Convert to fraction form
    665,124.60/997,589.70 = 191,760.60/x
  3. Step 3: Cross multiply
    665,124.60x = 997,589.70 × 191,760.60
  4. Step 4: Simplify right side
    665,124.60x = 191,298,399,425.82
  5. Step 5: Solve for x
    x = 191,298,399,425.82/665,124.60
  6. Step 6: Final answer
    x = 287,612.88

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1.5x scale

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.