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Finding the Fourth Proportional to 313,936.40, 470,904.60 and 126,851.60

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Solution

The fourth proportional to 313,936.40, 470,904.60 and 126,851.60 is: 190,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,936.40 : 470,904.60 = 126,851.60 : x
  2. Step 2: Convert to fraction form
    313,936.40/470,904.60 = 126,851.60/x
  3. Step 3: Cross multiply
    313,936.40x = 470,904.60 × 126,851.60
  4. Step 4: Simplify right side
    313,936.40x = 59,735,001,957.36
  5. Step 5: Solve for x
    x = 59,735,001,957.36/313,936.40
  6. Step 6: Final answer
    x = 190,277.40

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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.