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Finding the Fourth Proportional to 413,957.40, 620,936.10 and 118,469.40

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Solution

The fourth proportional to 413,957.40, 620,936.10 and 118,469.40 is: 177,704.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,957.40 : 620,936.10 = 118,469.40 : x
  2. Step 2: Convert to fraction form
    413,957.40/620,936.10 = 118,469.40/x
  3. Step 3: Cross multiply
    413,957.40x = 620,936.10 × 118,469.40
  4. Step 4: Simplify right side
    413,957.40x = 73,561,927,205.34
  5. Step 5: Solve for x
    x = 73,561,927,205.34/413,957.40
  6. Step 6: Final answer
    x = 177,704.10

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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.