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Finding the Fourth Proportional to 56,940.64, 85,307.28 and 55,696.48

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Solution

The fourth proportional to 56,940.64, 85,307.28 and 55,696.48 is: 83,443.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,940.64 : 85,307.28 = 55,696.48 : x
  2. Step 2: Convert to fraction form
    56,940.64/85,307.28 = 55,696.48/x
  3. Step 3: Cross multiply
    56,940.64x = 85,307.28 × 55,696.48
  4. Step 4: Simplify right side
    56,940.64x = 4,751,315,214.37
  5. Step 5: Solve for x
    x = 4,751,315,214.37/56,940.64
  6. Step 6: Final answer
    x = 83,443.31

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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.