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Finding the Fourth Proportional to 231,937.40, 348,021.30 and 91,700.60

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Solution

The fourth proportional to 231,937.40, 348,021.30 and 91,700.60 is: 137,596.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,937.40 : 348,021.30 = 91,700.60 : x
  2. Step 2: Convert to fraction form
    231,937.40/348,021.30 = 91,700.60/x
  3. Step 3: Cross multiply
    231,937.40x = 348,021.30 × 91,700.60
  4. Step 4: Simplify right side
    231,937.40x = 31,913,762,022.78
  5. Step 5: Solve for x
    x = 31,913,762,022.78/231,937.40
  6. Step 6: Final answer
    x = 137,596.45

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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.