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Finding the Fourth Proportional to 22,188.48, 30,607.20 and 15,902.40

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Solution

The fourth proportional to 22,188.48, 30,607.20 and 15,902.40 is: 21,936.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.48 : 30,607.20 = 15,902.40 : x
  2. Step 2: Convert to fraction form
    22,188.48/30,607.20 = 15,902.40/x
  3. Step 3: Cross multiply
    22,188.48x = 30,607.20 × 15,902.40
  4. Step 4: Simplify right side
    22,188.48x = 486,727,937.28
  5. Step 5: Solve for x
    x = 486,727,937.28/22,188.48
  6. Step 6: Final answer
    x = 21,936.06

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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.