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Finding the Fourth Proportional to 13,957.13, 20,911.08 and 7,368.77

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Solution

The fourth proportional to 13,957.13, 20,911.08 and 7,368.77 is: 11,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.13 : 20,911.08 = 7,368.77 : x
  2. Step 2: Convert to fraction form
    13,957.13/20,911.08 = 7,368.77/x
  3. Step 3: Cross multiply
    13,957.13x = 20,911.08 × 7,368.77
  4. Step 4: Simplify right side
    13,957.13x = 154,088,938.97
  5. Step 5: Solve for x
    x = 154,088,938.97/13,957.13
  6. Step 6: Final answer
    x = 11,040.16

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.