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Finding the Fourth Proportional to 664,441.80, 996,662.70 and 243,881.70

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Solution

The fourth proportional to 664,441.80, 996,662.70 and 243,881.70 is: 365,822.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,441.80 : 996,662.70 = 243,881.70 : x
  2. Step 2: Convert to fraction form
    664,441.80/996,662.70 = 243,881.70/x
  3. Step 3: Cross multiply
    664,441.80x = 996,662.70 × 243,881.70
  4. Step 4: Simplify right side
    664,441.80x = 243,067,793,602.59
  5. Step 5: Solve for x
    x = 243,067,793,602.59/664,441.80
  6. Step 6: Final answer
    x = 365,822.55

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Half scale
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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.