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Finding the Fourth Proportional to 72,081.94, 108,122.92 and 32,638.18

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Solution

The fourth proportional to 72,081.94, 108,122.92 and 32,638.18 is: 48,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,081.94 : 108,122.92 = 32,638.18 : x
  2. Step 2: Convert to fraction form
    72,081.94/108,122.92 = 32,638.18/x
  3. Step 3: Cross multiply
    72,081.94x = 108,122.92 × 32,638.18
  4. Step 4: Simplify right side
    72,081.94x = 3,528,935,325.09
  5. Step 5: Solve for x
    x = 3,528,935,325.09/72,081.94
  6. Step 6: Final answer
    x = 48,957.27

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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.