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Finding the Fourth Proportional to 14,865.40, 20,513.92 and 8,151.04

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Solution

The fourth proportional to 14,865.40, 20,513.92 and 8,151.04 is: 11,248.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,865.40 : 20,513.92 = 8,151.04 : x
  2. Step 2: Convert to fraction form
    14,865.40/20,513.92 = 8,151.04/x
  3. Step 3: Cross multiply
    14,865.40x = 20,513.92 × 8,151.04
  4. Step 4: Simplify right side
    14,865.40x = 167,209,782.48
  5. Step 5: Solve for x
    x = 167,209,782.48/14,865.40
  6. Step 6: Final answer
    x = 11,248.25

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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.