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Finding the Fourth Proportional to 664,715.20, 996,957.60 and 243,774.40

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Solution

The fourth proportional to 664,715.20, 996,957.60 and 243,774.40 is: 365,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,715.20 : 996,957.60 = 243,774.40 : x
  2. Step 2: Convert to fraction form
    664,715.20/996,957.60 = 243,774.40/x
  3. Step 3: Cross multiply
    664,715.20x = 996,957.60 × 243,774.40
  4. Step 4: Simplify right side
    664,715.20x = 243,032,740,765.44
  5. Step 5: Solve for x
    x = 243,032,740,765.44/664,715.20
  6. Step 6: Final answer
    x = 365,619.35

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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.