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Finding the Fourth Proportional to 9,237.75, 12,748.15 and 5,259.11

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Solution

The fourth proportional to 9,237.75, 12,748.15 and 5,259.11 is: 7,257.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,237.75 : 12,748.15 = 5,259.11 : x
  2. Step 2: Convert to fraction form
    9,237.75/12,748.15 = 5,259.11/x
  3. Step 3: Cross multiply
    9,237.75x = 12,748.15 × 5,259.11
  4. Step 4: Simplify right side
    9,237.75x = 67,043,937.69
  5. Step 5: Solve for x
    x = 67,043,937.69/9,237.75
  6. Step 6: Final answer
    x = 7,257.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.