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Finding the Fourth Proportional to 7,482.60, 11,216.70 and 5,815.80

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Solution

The fourth proportional to 7,482.60, 11,216.70 and 5,815.80 is: 8,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,482.60 : 11,216.70 = 5,815.80 : x
  2. Step 2: Convert to fraction form
    7,482.60/11,216.70 = 5,815.80/x
  3. Step 3: Cross multiply
    7,482.60x = 11,216.70 × 5,815.80
  4. Step 4: Simplify right side
    7,482.60x = 65,234,083.86
  5. Step 5: Solve for x
    x = 65,234,083.86/7,482.60
  6. Step 6: Final answer
    x = 8,718.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.