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Finding the Fourth Proportional to 664,335.10, 996,502.65 and 190,992.70

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Solution

The fourth proportional to 664,335.10, 996,502.65 and 190,992.70 is: 286,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,335.10 : 996,502.65 = 190,992.70 : x
  2. Step 2: Convert to fraction form
    664,335.10/996,502.65 = 190,992.70/x
  3. Step 3: Cross multiply
    664,335.10x = 996,502.65 × 190,992.70
  4. Step 4: Simplify right side
    664,335.10x = 190,324,731,680.66
  5. Step 5: Solve for x
    x = 190,324,731,680.66/664,335.10
  6. Step 6: Final answer
    x = 286,489.05

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Double scale
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Similar ratio
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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.