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Finding the Fourth Proportional to 74,830.79, 103,266.56 and 41,296.79

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Solution

The fourth proportional to 74,830.79, 103,266.56 and 41,296.79 is: 56,989.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,830.79 : 103,266.56 = 41,296.79 : x
  2. Step 2: Convert to fraction form
    74,830.79/103,266.56 = 41,296.79/x
  3. Step 3: Cross multiply
    74,830.79x = 103,266.56 × 41,296.79
  4. Step 4: Simplify right side
    74,830.79x = 4,264,577,442.34
  5. Step 5: Solve for x
    x = 4,264,577,442.34/74,830.79
  6. Step 6: Final answer
    x = 56,989.61

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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.