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Finding the Fourth Proportional to 271,812.40, 407,718.60 and 147,396.40

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Solution

The fourth proportional to 271,812.40, 407,718.60 and 147,396.40 is: 221,094.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,812.40 : 407,718.60 = 147,396.40 : x
  2. Step 2: Convert to fraction form
    271,812.40/407,718.60 = 147,396.40/x
  3. Step 3: Cross multiply
    271,812.40x = 407,718.60 × 147,396.40
  4. Step 4: Simplify right side
    271,812.40x = 60,096,253,853.04
  5. Step 5: Solve for x
    x = 60,096,253,853.04/271,812.40
  6. Step 6: Final answer
    x = 221,094.60

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Why These Related Problems?

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