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Finding the Fourth Proportional to 231,940.80, 348,040.80 and 98,798.40

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Solution

The fourth proportional to 231,940.80, 348,040.80 and 98,798.40 is: 148,252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,940.80 : 348,040.80 = 98,798.40 : x
  2. Step 2: Convert to fraction form
    231,940.80/348,040.80 = 98,798.40/x
  3. Step 3: Cross multiply
    231,940.80x = 348,040.80 × 98,798.40
  4. Step 4: Simplify right side
    231,940.80x = 34,385,874,174.72
  5. Step 5: Solve for x
    x = 34,385,874,174.72/231,940.80
  6. Step 6: Final answer
    x = 148,252.80

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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.