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Finding the Fourth Proportional to 13,045.08, 18,003.42 and 7,455

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Solution

The fourth proportional to 13,045.08, 18,003.42 and 7,455 is: 10,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,045.08 : 18,003.42 = 7,455 : x
  2. Step 2: Convert to fraction form
    13,045.08/18,003.42 = 7,455/x
  3. Step 3: Cross multiply
    13,045.08x = 18,003.42 × 7,455
  4. Step 4: Simplify right side
    13,045.08x = 134,215,496.10
  5. Step 5: Solve for x
    x = 134,215,496.10/13,045.08
  6. Step 6: Final answer
    x = 10,288.59

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.