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Finding the Fourth Proportional to 13,101.60, 19,661.04 and 9,647.04

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Solution

The fourth proportional to 13,101.60, 19,661.04 and 9,647.04 is: 14,476.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.60 : 19,661.04 = 9,647.04 : x
  2. Step 2: Convert to fraction form
    13,101.60/19,661.04 = 9,647.04/x
  3. Step 3: Cross multiply
    13,101.60x = 19,661.04 × 9,647.04
  4. Step 4: Simplify right side
    13,101.60x = 189,670,839.32
  5. Step 5: Solve for x
    x = 189,670,839.32/13,101.60
  6. Step 6: Final answer
    x = 14,476.92

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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.