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Finding the Fourth Proportional to 77,955.74, 116,940.45 and 21,796.46

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Solution

The fourth proportional to 77,955.74, 116,940.45 and 21,796.46 is: 32,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,955.74 : 116,940.45 = 21,796.46 : x
  2. Step 2: Convert to fraction form
    77,955.74/116,940.45 = 21,796.46/x
  3. Step 3: Cross multiply
    77,955.74x = 116,940.45 × 21,796.46
  4. Step 4: Simplify right side
    77,955.74x = 2,548,887,840.81
  5. Step 5: Solve for x
    x = 2,548,887,840.81/77,955.74
  6. Step 6: Final answer
    x = 32,696.60

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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.