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Finding the Fourth Proportional to 664,518.30, 996,777.45 and 243,958.20

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Solution

The fourth proportional to 664,518.30, 996,777.45 and 243,958.20 is: 365,937.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,518.30 : 996,777.45 = 243,958.20 : x
  2. Step 2: Convert to fraction form
    664,518.30/996,777.45 = 243,958.20/x
  3. Step 3: Cross multiply
    664,518.30x = 996,777.45 × 243,958.20
  4. Step 4: Simplify right side
    664,518.30x = 243,172,032,502.59
  5. Step 5: Solve for x
    x = 243,172,032,502.59/664,518.30
  6. Step 6: Final answer
    x = 365,937.30

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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.