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Finding the Fourth Proportional to 31,651.92, 47,477.76 and 12,927.92

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Solution

The fourth proportional to 31,651.92, 47,477.76 and 12,927.92 is: 19,391.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,651.92 : 47,477.76 = 12,927.92 : x
  2. Step 2: Convert to fraction form
    31,651.92/47,477.76 = 12,927.92/x
  3. Step 3: Cross multiply
    31,651.92x = 47,477.76 × 12,927.92
  4. Step 4: Simplify right side
    31,651.92x = 613,788,683.06
  5. Step 5: Solve for x
    x = 613,788,683.06/31,651.92
  6. Step 6: Final answer
    x = 19,391.83

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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.