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Finding the Fourth Proportional to 31,980.15, 47,968.47 and 9,793.71

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Solution

The fourth proportional to 31,980.15, 47,968.47 and 9,793.71 is: 14,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.15 : 47,968.47 = 9,793.71 : x
  2. Step 2: Convert to fraction form
    31,980.15/47,968.47 = 9,793.71/x
  3. Step 3: Cross multiply
    31,980.15x = 47,968.47 × 9,793.71
  4. Step 4: Simplify right side
    31,980.15x = 469,789,284.32
  5. Step 5: Solve for x
    x = 469,789,284.32/31,980.15
  6. Step 6: Final answer
    x = 14,690.03

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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.