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Finding the Fourth Proportional to 10,224.80, 15,337.20 and 7,114.40

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Solution

The fourth proportional to 10,224.80, 15,337.20 and 7,114.40 is: 10,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,224.80 : 15,337.20 = 7,114.40 : x
  2. Step 2: Convert to fraction form
    10,224.80/15,337.20 = 7,114.40/x
  3. Step 3: Cross multiply
    10,224.80x = 15,337.20 × 7,114.40
  4. Step 4: Simplify right side
    10,224.80x = 109,114,975.68
  5. Step 5: Solve for x
    x = 109,114,975.68/10,224.80
  6. Step 6: Final answer
    x = 10,671.60

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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.