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Finding the Fourth Proportional to 17,012.16, 25,420.65 and 12,987.27

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Solution

The fourth proportional to 17,012.16, 25,420.65 and 12,987.27 is: 19,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,012.16 : 25,420.65 = 12,987.27 : x
  2. Step 2: Convert to fraction form
    17,012.16/25,420.65 = 12,987.27/x
  3. Step 3: Cross multiply
    17,012.16x = 25,420.65 × 12,987.27
  4. Step 4: Simplify right side
    17,012.16x = 330,144,845.13
  5. Step 5: Solve for x
    x = 330,144,845.13/17,012.16
  6. Step 6: Final answer
    x = 19,406.40

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.