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Finding the Fourth Proportional to 7,614.13, 11,412.06 and 3,918.10

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Solution

The fourth proportional to 7,614.13, 11,412.06 and 3,918.10 is: 5,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,614.13 : 11,412.06 = 3,918.10 : x
  2. Step 2: Convert to fraction form
    7,614.13/11,412.06 = 3,918.10/x
  3. Step 3: Cross multiply
    7,614.13x = 11,412.06 × 3,918.10
  4. Step 4: Simplify right side
    7,614.13x = 44,713,592.29
  5. Step 5: Solve for x
    x = 44,713,592.29/7,614.13
  6. Step 6: Final answer
    x = 5,872.45

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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.