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Finding the Fourth Proportional to 19,323.92, 28,990.92 and 5,472.92

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Solution

The fourth proportional to 19,323.92, 28,990.92 and 5,472.92 is: 8,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,323.92 : 28,990.92 = 5,472.92 : x
  2. Step 2: Convert to fraction form
    19,323.92/28,990.92 = 5,472.92/x
  3. Step 3: Cross multiply
    19,323.92x = 28,990.92 × 5,472.92
  4. Step 4: Simplify right side
    19,323.92x = 158,664,985.89
  5. Step 5: Solve for x
    x = 158,664,985.89/19,323.92
  6. Step 6: Final answer
    x = 8,210.81

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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.