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Finding the Fourth Proportional to 72,596.52, 108,895.32 and 20,008.88

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Solution

The fourth proportional to 72,596.52, 108,895.32 and 20,008.88 is: 30,013.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,596.52 : 108,895.32 = 20,008.88 : x
  2. Step 2: Convert to fraction form
    72,596.52/108,895.32 = 20,008.88/x
  3. Step 3: Cross multiply
    72,596.52x = 108,895.32 × 20,008.88
  4. Step 4: Simplify right side
    72,596.52x = 2,178,873,390.44
  5. Step 5: Solve for x
    x = 2,178,873,390.44/72,596.52
  6. Step 6: Final answer
    x = 30,013.47

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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.