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Finding the Fourth Proportional to 39,873.60, 59,810.40 and 11,793.60

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Solution

The fourth proportional to 39,873.60, 59,810.40 and 11,793.60 is: 17,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,873.60 : 59,810.40 = 11,793.60 : x
  2. Step 2: Convert to fraction form
    39,873.60/59,810.40 = 11,793.60/x
  3. Step 3: Cross multiply
    39,873.60x = 59,810.40 × 11,793.60
  4. Step 4: Simplify right side
    39,873.60x = 705,379,933.44
  5. Step 5: Solve for x
    x = 705,379,933.44/39,873.60
  6. Step 6: Final answer
    x = 17,690.40

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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.