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Finding the Fourth Proportional to 238,664.70, 358,012.85 and 70,200.09

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Solution

The fourth proportional to 238,664.70, 358,012.85 and 70,200.09 is: 105,304.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,664.70 : 358,012.85 = 70,200.09 : x
  2. Step 2: Convert to fraction form
    238,664.70/358,012.85 = 70,200.09/x
  3. Step 3: Cross multiply
    238,664.70x = 358,012.85 × 70,200.09
  4. Step 4: Simplify right side
    238,664.70x = 25,132,533,940.16
  5. Step 5: Solve for x
    x = 25,132,533,940.16/238,664.70
  6. Step 6: Final answer
    x = 105,304.78

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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.