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Finding the Fourth Proportional to 13,890.25, 19,168.95 and 7,603.03

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Solution

The fourth proportional to 13,890.25, 19,168.95 and 7,603.03 is: 10,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.25 : 19,168.95 = 7,603.03 : x
  2. Step 2: Convert to fraction form
    13,890.25/19,168.95 = 7,603.03/x
  3. Step 3: Cross multiply
    13,890.25x = 19,168.95 × 7,603.03
  4. Step 4: Simplify right side
    13,890.25x = 145,742,101.92
  5. Step 5: Solve for x
    x = 145,742,101.92/13,890.25
  6. Step 6: Final answer
    x = 10,492.40

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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.