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Finding the Fourth Proportional to 74,908.92, 103,370.70 and 41,374.20

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Solution

The fourth proportional to 74,908.92, 103,370.70 and 41,374.20 is: 57,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,908.92 : 103,370.70 = 41,374.20 : x
  2. Step 2: Convert to fraction form
    74,908.92/103,370.70 = 41,374.20/x
  3. Step 3: Cross multiply
    74,908.92x = 103,370.70 × 41,374.20
  4. Step 4: Simplify right side
    74,908.92x = 4,276,880,015.94
  5. Step 5: Solve for x
    x = 4,276,880,015.94/74,908.92
  6. Step 6: Final answer
    x = 57,094.40

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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.