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Finding the Fourth Proportional to 77,568.73, 107,051.30 and 45,743.83

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Solution

The fourth proportional to 77,568.73, 107,051.30 and 45,743.83 is: 63,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,568.73 : 107,051.30 = 45,743.83 : x
  2. Step 2: Convert to fraction form
    77,568.73/107,051.30 = 45,743.83/x
  3. Step 3: Cross multiply
    77,568.73x = 107,051.30 × 45,743.83
  4. Step 4: Simplify right side
    77,568.73x = 4,896,936,468.48
  5. Step 5: Solve for x
    x = 4,896,936,468.48/77,568.73
  6. Step 6: Final answer
    x = 63,130.29

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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.