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Finding the Fourth Proportional to 9,811.15, 13,539.11 and 5,562.61

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Solution

The fourth proportional to 9,811.15, 13,539.11 and 5,562.61 is: 7,676.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.15 : 13,539.11 = 5,562.61 : x
  2. Step 2: Convert to fraction form
    9,811.15/13,539.11 = 5,562.61/x
  3. Step 3: Cross multiply
    9,811.15x = 13,539.11 × 5,562.61
  4. Step 4: Simplify right side
    9,811.15x = 75,312,788.68
  5. Step 5: Solve for x
    x = 75,312,788.68/9,811.15
  6. Step 6: Final answer
    x = 7,676.24

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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.