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Finding the Fourth Proportional to 76,951.56, 115,463.90 and 53,295.51

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Solution

The fourth proportional to 76,951.56, 115,463.90 and 53,295.51 is: 79,968.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,951.56 : 115,463.90 = 53,295.51 : x
  2. Step 2: Convert to fraction form
    76,951.56/115,463.90 = 53,295.51/x
  3. Step 3: Cross multiply
    76,951.56x = 115,463.90 × 53,295.51
  4. Step 4: Simplify right side
    76,951.56x = 6,153,708,003.32
  5. Step 5: Solve for x
    x = 6,153,708,003.32/76,951.56
  6. Step 6: Final answer
    x = 79,968.59

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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.