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Finding the Fourth Proportional to 7,412.76, 11,107.62 and 4,671

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Solution

The fourth proportional to 7,412.76, 11,107.62 and 4,671 is: 6,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.76 : 11,107.62 = 4,671 : x
  2. Step 2: Convert to fraction form
    7,412.76/11,107.62 = 4,671/x
  3. Step 3: Cross multiply
    7,412.76x = 11,107.62 × 4,671
  4. Step 4: Simplify right side
    7,412.76x = 51,883,693.02
  5. Step 5: Solve for x
    x = 51,883,693.02/7,412.76
  6. Step 6: Final answer
    x = 6,999.24

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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.