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Finding the Fourth Proportional to 101,955.48, 140,696.60 and 56,631.42

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Solution

The fourth proportional to 101,955.48, 140,696.60 and 56,631.42 is: 78,150.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,955.48 : 140,696.60 = 56,631.42 : x
  2. Step 2: Convert to fraction form
    101,955.48/140,696.60 = 56,631.42/x
  3. Step 3: Cross multiply
    101,955.48x = 140,696.60 × 56,631.42
  4. Step 4: Simplify right side
    101,955.48x = 7,967,847,964.01
  5. Step 5: Solve for x
    x = 7,967,847,964.01/101,955.48
  6. Step 6: Final answer
    x = 78,150.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.