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Finding the Fourth Proportional to 18,703.56, 28,050.54 and 5,552.88

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Solution

The fourth proportional to 18,703.56, 28,050.54 and 5,552.88 is: 8,327.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.56 : 28,050.54 = 5,552.88 : x
  2. Step 2: Convert to fraction form
    18,703.56/28,050.54 = 5,552.88/x
  3. Step 3: Cross multiply
    18,703.56x = 28,050.54 × 5,552.88
  4. Step 4: Simplify right side
    18,703.56x = 155,761,282.56
  5. Step 5: Solve for x
    x = 155,761,282.56/18,703.56
  6. Step 6: Final answer
    x = 8,327.89

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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.