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Finding the Fourth Proportional to 7,910.15, 11,870.76 and 5,835.54

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Solution

The fourth proportional to 7,910.15, 11,870.76 and 5,835.54 is: 8,757.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.15 : 11,870.76 = 5,835.54 : x
  2. Step 2: Convert to fraction form
    7,910.15/11,870.76 = 5,835.54/x
  3. Step 3: Cross multiply
    7,910.15x = 11,870.76 × 5,835.54
  4. Step 4: Simplify right side
    7,910.15x = 69,272,294.81
  5. Step 5: Solve for x
    x = 69,272,294.81/7,910.15
  6. Step 6: Final answer
    x = 8,757.39

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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.