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Finding the Fourth Proportional to 31,794.61, 47,679.62 and 10,728.99

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Solution

The fourth proportional to 31,794.61, 47,679.62 and 10,728.99 is: 16,089.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,794.61 : 47,679.62 = 10,728.99 : x
  2. Step 2: Convert to fraction form
    31,794.61/47,679.62 = 10,728.99/x
  3. Step 3: Cross multiply
    31,794.61x = 47,679.62 × 10,728.99
  4. Step 4: Simplify right side
    31,794.61x = 511,554,166.18
  5. Step 5: Solve for x
    x = 511,554,166.18/31,794.61
  6. Step 6: Final answer
    x = 16,089.34

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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.