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Finding the Fourth Proportional to 113,968.70, 157,276.41 and 62,980.01

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Solution

The fourth proportional to 113,968.70, 157,276.41 and 62,980.01 is: 86,912.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,968.70 : 157,276.41 = 62,980.01 : x
  2. Step 2: Convert to fraction form
    113,968.70/157,276.41 = 62,980.01/x
  3. Step 3: Cross multiply
    113,968.70x = 157,276.41 × 62,980.01
  4. Step 4: Simplify right side
    113,968.70x = 9,905,269,874.56
  5. Step 5: Solve for x
    x = 9,905,269,874.56/113,968.70
  6. Step 6: Final answer
    x = 86,912.19

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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.