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Finding the Fourth Proportional to 91,266.31, 125,952.42 and 50,980.96

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Solution

The fourth proportional to 91,266.31, 125,952.42 and 50,980.96 is: 70,356.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,266.31 : 125,952.42 = 50,980.96 : x
  2. Step 2: Convert to fraction form
    91,266.31/125,952.42 = 50,980.96/x
  3. Step 3: Cross multiply
    91,266.31x = 125,952.42 × 50,980.96
  4. Step 4: Simplify right side
    91,266.31x = 6,421,175,285.92
  5. Step 5: Solve for x
    x = 6,421,175,285.92/91,266.31
  6. Step 6: Final answer
    x = 70,356.47

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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.