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Finding the Fourth Proportional to 74,392.63, 102,680.06 and 45,719.24

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Solution

The fourth proportional to 74,392.63, 102,680.06 and 45,719.24 is: 63,103.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,392.63 : 102,680.06 = 45,719.24 : x
  2. Step 2: Convert to fraction form
    74,392.63/102,680.06 = 45,719.24/x
  3. Step 3: Cross multiply
    74,392.63x = 102,680.06 × 45,719.24
  4. Step 4: Simplify right side
    74,392.63x = 4,694,453,564.36
  5. Step 5: Solve for x
    x = 4,694,453,564.36/74,392.63
  6. Step 6: Final answer
    x = 63,103.75

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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.