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Finding the Fourth Proportional to 56,424.94, 77,866.55 and 31,274.44

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Solution

The fourth proportional to 56,424.94, 77,866.55 and 31,274.44 is: 43,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,424.94 : 77,866.55 = 31,274.44 : x
  2. Step 2: Convert to fraction form
    56,424.94/77,866.55 = 31,274.44/x
  3. Step 3: Cross multiply
    56,424.94x = 77,866.55 × 31,274.44
  4. Step 4: Simplify right side
    56,424.94x = 2,435,232,512.22
  5. Step 5: Solve for x
    x = 2,435,232,512.22/56,424.94
  6. Step 6: Final answer
    x = 43,158.80

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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.