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Finding the Fourth Proportional to 56,754.66, 78,330.77 and 43,300.49

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Solution

The fourth proportional to 56,754.66, 78,330.77 and 43,300.49 is: 59,761.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,754.66 : 78,330.77 = 43,300.49 : x
  2. Step 2: Convert to fraction form
    56,754.66/78,330.77 = 43,300.49/x
  3. Step 3: Cross multiply
    56,754.66x = 78,330.77 × 43,300.49
  4. Step 4: Simplify right side
    56,754.66x = 3,391,760,839.69
  5. Step 5: Solve for x
    x = 3,391,760,839.69/56,754.66
  6. Step 6: Final answer
    x = 59,761.81

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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.