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Finding the Fourth Proportional to 9,273.80, 13,910.70 and 4,089.80

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Solution

The fourth proportional to 9,273.80, 13,910.70 and 4,089.80 is: 6,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,273.80 : 13,910.70 = 4,089.80 : x
  2. Step 2: Convert to fraction form
    9,273.80/13,910.70 = 4,089.80/x
  3. Step 3: Cross multiply
    9,273.80x = 13,910.70 × 4,089.80
  4. Step 4: Simplify right side
    9,273.80x = 56,891,980.86
  5. Step 5: Solve for x
    x = 56,891,980.86/9,273.80
  6. Step 6: Final answer
    x = 6,134.70

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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.