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Finding the Fourth Proportional to 7,462.60, 11,165.10 and 4,870.60

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Solution

The fourth proportional to 7,462.60, 11,165.10 and 4,870.60 is: 7,287.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,462.60 : 11,165.10 = 4,870.60 : x
  2. Step 2: Convert to fraction form
    7,462.60/11,165.10 = 4,870.60/x
  3. Step 3: Cross multiply
    7,462.60x = 11,165.10 × 4,870.60
  4. Step 4: Simplify right side
    7,462.60x = 54,380,736.06
  5. Step 5: Solve for x
    x = 54,380,736.06/7,462.60
  6. Step 6: Final answer
    x = 7,287.10

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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.