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Finding the Fourth Proportional to 48,662.60, 72,993.90 and 39,907.40

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Solution

The fourth proportional to 48,662.60, 72,993.90 and 39,907.40 is: 59,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,662.60 : 72,993.90 = 39,907.40 : x
  2. Step 2: Convert to fraction form
    48,662.60/72,993.90 = 39,907.40/x
  3. Step 3: Cross multiply
    48,662.60x = 72,993.90 × 39,907.40
  4. Step 4: Simplify right side
    48,662.60x = 2,912,996,764.86
  5. Step 5: Solve for x
    x = 2,912,996,764.86/48,662.60
  6. Step 6: Final answer
    x = 59,861.10

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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.